فك1 الفَكُّ, accord. to Er-Rághib, primarily signifies التَّفْرِيجُ [i. e. The opening a thing; and particularly by diduction, or so as to form an intervening space, or a gap, or breach]. (TA.) You say, فَكَّ, first Pers\. فَكَكْتُ, (S, O, Msb, K,) aor. ـُ inf. n. فَكٌّ, (O, Msb,) He separated (S, O, Msb, K) a thing (S, O, K) from another thing; and any two things knit together, or intricately intermixed: (S, O:) or فَكَكْتُهُ I separated one part of it from another part thereof: (Msb:) and ↓ تَفْكِيكٌ likewise signifies the separating two things knit together, or intricately intermixed. (Lth, S, TA.) And He broke [or broke open] a seal, i. e. a sealed piece of clay or wax; (Mgh, Msb, * TA;) in relation to which ↓ يَفْتَكُّهُ occurs as meaning يَفُكُّهُ, though we have not heard it [as a classical expression in this sense]. (Mgh.) b2: And فَكَّ العَظْمَ, (Mgh, Msb,) aor.  and inf. n. as above, (Msb,) He dislocated the bone; put it out of joint. (Mgh, Msb.) [This, or the like, is what is meant by its being said that] الفَكُّ in the hand, or arm, is [i. e. denotes] less than الكَسْرُ. (K.) b3:  And فَكَّ يَدَهُ, (K, TA,) aor.  and inf. n. as above, (TA,) He opened, or unclosed, his hand from what was in it: (K, TA:) so in the M. (TA.) b4:  And فَكَّ الرَّهْنَ, (S, Mgh, O, Msb, K,) aor. ـُ (TA,) inf. n. فَكٌّ and فُكُوكٌ; (K;) and ↓ افتكّهُ; (S, Mgh, O, K;) (tropical:)  He redeemed the pledge; (S, Mgh, O, Msb, K, TA;) got it out from the hand of him to whom it was pledged. (Mgh.) b5:  And فَكَكْتُ signifies also I loosed, set loose or free, or let go, anything. (Msb.) b6: [Hence,] فَكَّ الأَسِيرُ, (Msb, K,) aor. ـُ (TA,) inf. n. فَكٌّ and فَكَاكٌ and فِكَاكٌ, (K,) (tropical:)  He liberated, or set free, the captive. (Msb, K, TA.) and فَكَّ الرَّقَبَةَ, (S, O, Msb, K,) aor. ـُ inf. n. فَكٌّ, (TA,) [lit. He loosed the neck,] means (tropical:)  he emancipated [the slave]. (S, O, Msb, K, TA.) فَكُّ الرَّقَبَةِ is expl. in a trad. as meaning (assumed tropical:)  The assisting in paying the price [of the slave when one is unable to pay the whole of the price]. (O, TA.) In the Kur [xc. 13], فَكُّ رَقَبَةٍ is said by some to mean (assumed tropical:)  The emancipating of a slave: and by some. (assumed tropical:)  the man's emancipating himself from subjection to God's punishment by the confession of the unity of God and by righteous doing and then by teaching the same to others. (TA,) فُكَّ فُلَانٌ means (assumed tropical:)  Such a one was set free, and at rest, from a thing. (IAar, Th, TA.) b7:  [Hence also,] one  says, هُوَ يَفُكُّ المَشَاكِلَ (assumed tropical:)  [He solves] the things, or affairs, that are dubious, or confused. (TA in art. شكل.) b8:  قَدْفَكَّ وَفَرَّجَ is said of a very old man, meaning فَرَّجَ لَحْيَيْهِ [i. e. He has parted his jaws, by hanging the lower jaw in consequence of weakness]; as is the case in extreme old age. (S, O,) And [hence.] فَكَّ, (Az, S, O, K,) aor. ـُ inf. n. فَكٌّ and فُكُوكٌ, (Az, S, O,) said of a man, means (assumed tropical:)  He was, or became, extremely aged, or old and weak. (Az, S, O, K.) [Or فَكَّ thus used may be from الفَكُّ signifying “ the jaw: ” and so what next follows.] b9:  فَكَكْتُ الصَّبِىَّ I put medicine into the mouth of the boy or young male child [opening his jaws for that purpose]. (S, O.) A2: قَدْ فَكِكْتَ, [third Pers\. فَكَّ,] aor. ـَ inf. n. فَكَكٌ, Thou hast become such as is termed أَفَكُّ i. e. one  whose مَنْكِب [here meaning shoulder-bone] has  become unknit, or loosened, (اِنْفَرَجَ,) from its joint, in consequence of weakness and flaccidity. (S.) [See also فَكَكٌ below.] b2:  And قَدْفَكِكْتَ, aor. ـَ (S, O, K;) and فَكُكْتَ, (O, K,) a verb of a very rare form, [respecting which see دَمَّ, last sentence,] (MF, TA,) aor. ـُ (O, K;) inf. n. فَكَّةٌ (S, O, K) and فَكٌّ also; (TA;) (tropical:)  Thou  hast become foolish, or stupid, and soft, flaccid, or languid. (S, O, K, TA.) 2 فَكَّّ see the preceding paragraph, second sentence.4 افكّت She (a camel) being near to bringing forth, her صَلَوَانِ [app. meaning two parts on the right and left of the tail (see صلًا in art. صلو)] became lax, or flaccid, and her udder became large; (K, TA;) and so أَفْكَهَت; (TA;) so too ↓ تفكّكت: or this last signifies she became vehemently desirous of the stallion. (O, K.) b2: And افكّ مِنَ الحِبَالَةِ He (a gazelle) got loose from the snare into which he had fallen. (TA: also mentioned, but not expl., in the O.) 5 تفكّك It (a thing) became much, or widely, separated: and became unclosed. (O, TA.) b2: تفكّكت السَّفِينَةُ The ship parted asunder; became  disjointed; became separated in its places of joining. (Mgh in art. خلع.) b3:  See also 7. b4:  and see 4. b5:  You say also, هُوَ يَتَفَكَّكُ meaning (tropical:)  He is [or acts] without power of self-restraint, in consequence of stupidity, or unsoundness of intellect, (S, O, K, TA,) in his gait, and in his speech: (TA:) or تَفَكَّكَ in walking is syn. with تَخَلَّعَ, (S and K and TA in art. خلع,) i. e. [he was, or became, loose in the joints; or] he shook his shoulder-joints and his arms, and made signs with them. (TA in that art.) 7 انفكّ It became separated: you say, انفكّ الشَّىْءُ مِنَ الشَّىْءِ The thing became separated from the thing: (O, TA:) and اِنْفَكَكْتُ مِنْكَ [I became separated from thee]. (TA.) b2:  And, said of a bone, It became dislocated, or out of joint; (MA, Mgh, * Msb; *) it unknit, or loosened, and separated; syn. اِنْفَرَجَ وانْفَصَلَ; as also ↓ تفكّك. (Mgh.) [And it is also used in relation to a member of the body:] one says, سَقَطَ فُلَانٌ فانْفَكَّتْ قَدَمُهُ أَوْإِصْبَعُهُ i. e. اِنْفَرَجَتْ وَزَالَتْ [Such a one fell, and his foot, or his finger, became unknit, or loosened, and dislocated]: (S, O:) [or] انفكّت قَدَمُهُ means زَالَتْ [i. e. his foot became dislocated; and انفكّت إصْبَعُهُ means اِنْفَرَجَتْ [i. e. his finger became unknit, or loosened in a joint]. (K.) b3:  One says also, انفكّت رَقَبَتُهُ مِنَ الرِّقِّ, meaning (tropical:)  He became freed [lit. his neck became loosed] from slavery. (S, * O, * TA.) b4:  And انفكّ عَنْ عَهْدِهِ (assumed tropical:)  [He became released from his compact, engagement, or promise]. (TA voce اِنْفَرَكَ.) b5:  And لَايَنْفَكُّ عَنْ قُبْحِ فِعْلِهِ (assumed tropical:)  [He will not desist from his evil doing]. (O and K in art. عرف.) A2:  [It is also used in the sense and manner of the non-attributive verb زَالَ; respecting which see art. زيل.] One says, مَاانْفَكَّ فُلَانٌ قَائِمًا, meaning مَازَالَ قَائِمًا [i. e. Such a one ceased not to be, or continued to be, standing]. (S, O.) And مَاانْفَكَكْتُ أَذْكُرُكَ, meaning مَازِلْتُأَذْكُرُكَ I ceased not, or I continued, remembering thee]. (Fr, TA.) And it occurs in a verse of Dhu-r-Rummeh, immediately followed by إِلَّا, which is [said by As and IJ and others to be] redundant. (S, O. [See that verse, and the remarks upon it, in art. الا. p. 78, col. i.]) 8 إِفْتَكَ3َ see 1, former half, in two places.الفَكُّ The لَحْى [meaning jaw; and also either of the two lateral portions of the lower jaw], (S, O, Msb, K,) i. e. (Msb) each of the لَحْيَانِ; (Mgh, Msb;) as also ↓ الأَفَكُّ: (O, K:) or this latter signifies the مَجْمَع [or part in which is the commissure] of the خَطْم [generally meaning muzzle]; (Lth, O, K;) as also الفَكُّ; (TA;) that is, (Lth, O, in the K “ or ” [as if to denote a different meaning],) [the part in which is the symphysis] of the فَكَّانِ [or two lateral portions of the lower jaw]: (Lth, O, K:) [see الفَنِيكُ:] and الفَكَّانِ is said to mean the place [on either side with that on the other side] where the two jaws meet [and are articulated] next the temple, above and below; of a human being and of a horse or the like: (TA:) and, in the Bári', (Msb,) or in the T, (TA,) the place of meeting of the two sides of the mouth (مُلْتَقَى الشِّدْقَيْنِ) on both sides: (Msb, TA:) [but this last explanation is strange, and app. little known:]) pl. فُكُوكٌ. (Msb.) One  says, مَقْتَلُ الرَّجُلِ بَيْنَ فَكَّيْهِ [which may be best rendered The man's slayer is between his two jaws, or two lateral portions of his lower jaw]; (S, O, TA;) meaning the man's tongue: (TA:) a prov., in which مقتل may be [properly] an inf. n., or a noun of place, or an inf. n. used in the place of an act. part. n.: accord. to the third of these explanations, [which most nearly denotes the meaning intended,] it is as though one said, قَاتِلُ الرَّجُلِ بَيْنَ فَكَّيْهِ. (Meyd. [See Freytag's  Arab. Prov., ii. 597.]) See also فَكَكٌ.فَكَّةٌ [an inf. n.: see 1, last sentence].A2:  الفَكَّةُ is the name of One of the northern constellations, [Corona Borealis,] (Kzw,) certain stars, (S, O, K,) eight stars, called in Pers\. كاسه درويشان, (Kzw,) behind السِّمَاك الرَّامِح [i. e. Arcturus], (S, O, K,) [near] behind the staff of الصَّيَّاح [which is a name of Bootes], (Kzw,) having a circling form, (S, O, K, and Kzw,) but with a gap, or breach, in the circling, for which reason, [agreeably with the Pers\. appellation mentioned above,] it is called قَصْعَةُ المَسَاكِينِ [the bowl of the paupers], (Kzw,) this being the name given to it by the children. (As, S, O, K.) فَكَكٌ An unknit, or a loosened, state (اِنْفِرَاج) of the مَنْكِب [or shoulder-joint]. (K. [But see 1, last explanation but one, where it is mentioned as an inf. n.]) b2:  And (K) A state of dislocation of the foot: (S, O, K:) hence the phrase, in a verse of Ru-beh, كَمُنْهَاضِ الفَلَكٌ: (S, O: *) but (in this instance, O), accord. to As, الفَلَك is used by poetic license for الفَكّ [meaning “ the jaw,” so that the phrase signifies like him whose jaw has become broken after its having been set]. (S, O.) b3:  And A state of fracture of the jaw: (K, TA:) or of dislocation thereof. (TA.) فَكَاكُ الرَّهْنِ and فِكَاكُهُ, (S, O, Msb, * K,) the latter mentioned by Ks (S, O, Msb) and ISk, (Msb,) That wherewith the pledge is, or is to be, redeemed: (S, O, Msb, * K:) so in a verse cited voce غَلَقَ. (S, O.) فَكَّاكٌ [One who separates, &c., much, or often]. b2:  [And hence,] فَكَّاكٌ هَكَّاكٌ (tropical:)  One who does not make his words and their meanings congruous, or consistent, by reason of his foolishness, or stupidity. (Z, TA.) فَاكٌّ [as an act. part. n., Separating, &c. b2: And] (assumed tropical:)  Extremely aged, or old and weak; applied  in this sense to a man; (Az, S, O, K;) and also to a camel: (K:) or, applied to a camel, disabled, or fatigued, by leanness, or emaciation: fem. with  ة. (En-Nadr, TA.) b3:  And (tropical:)  Foolish, or stupid: (S, O: *) or very foolish, or stupid: (IAar, K, TA:) and you say فَاكٌّ تَاكٌّ, (IAar, S, O, TA,) making تاكّ an imitative sequent: or, accord. to Yaakoob, you say شَيْخٌ فَاكٌّ وَتَاكٌّ: thus he makes تاكّ a substitute, not an imitative sequent. (TA.) And أَحْمَقُ فَاكٌّ وَهَاكٌّ (tropical:)  [A foolish, or stupid, person,] one who talks of that which he knows and of that which he knows not, and is more, or oftener, incorrect than correct. (El-Hoseybee, TA.) Pl. فَكَكَةٌ and فِكَاكٌ. (IAar, K.) أَفَكُّ, (S, K,) or أَفَكُّ المَنْكِبِ, (K,) One whose مَنْكِب [here meaning shoulder-bone] has become unknit, or loosened, (اِنْفَرَجَ,) from its joint, in consequence of weakness and flaccidity. (S, K. * [See also مَفْرُوكٌ.]) b2:  And رَجُلٌ أَفَكُّ [A man having the jaw broken]. (TA. [There expl. as signifying مَسْكُورُ الفَكِّ; a mistranscription, for مَكْسُورُالفَكِّ: see فَكَكٌ, last sentence.]) A2: See also الفَكُّ.مُفِكَّةٌ, applied to a she-camel, part. n. of أَفَكَّت [q. v.]: (O, TA:) and مُفْكِهٌ and مُفْكِهَةٌ are syn. therewith. (TA.) مُتَفَكِّكَةٌ A mare desiring the stallion, (AO, O, K,) not offering opposition to him. (AO, O.) مُنْفَكِّينَ in the Kur [xcviii. 1], (O, TA,) followed by the words حَتَّى تَأْتِيَهُمُ الْبَيِّنَةُ, (O,) means, accord. to Mujáhid (O, TA) and Zj, (TA,) In the condition of desisting (O, TA) from their infidelity; (TA;) or, as Akh says, ceasing from their infidelity: (TA:) or, accord. to another, (O,) namely, Niftaweyh, (TA,) quitting the present state of existence, (O, TA,) i. e., sharing, one with another, in perdition, until the evidence came to them (O, TA) that had been affirmed to them in the Towráh, with respect to the description of Mohammad &c.; تَأْتِيَهُم being lit. an aor. , but in its meaning a pret.: (O:) Az says that it is not from مَا انْفَكَّ meaning مَا زَالَ, but from اِنْفِكَاكُ الشَّىْءِ مِنَ الشَّىْءِ meaning “ the thing's becoming  separated from the thing: ” accord. to IAar, as mentioned by Th, فُكَّ فُلَانٌ means “ Such a one was set free, and at rest, from a thing; ” and hence منفكّين in the Kur means experiencing rest: accord. to Er-Rághib, it means separated, or separated into several parties; for all [to whom the word, preceded by a negative, relates] were assenting to error. (TA.)