ثفن1 ثَفِنَتْ يَدُهُ, (S, M, A, K,) aor. ـَ (S, K,) inf. n. ثَفُنٌ, (S, M,) (tropical:)  His hand was, or became, rough, or callous, [as though resembling a ثَفنَة of a camel,] (S, M, A, K,) and blistered, (A,) from  work. (M.) A2:  ثَفَنَتْهُ, (S, K, *) aor. ـِ inf. n. ثَفْنٌ, (S,) She (a camel) struck him with her ثَفِنَات [pl. of ثَفَنَةُ, q. v.]. (S, K. *) b2:  And ثَفَنَهُ, (T, M, K,) aor.  as above, (K,) and so the inf. n., (T, M,) He impelled, pushed, thrust, or drove, him; or pushed, thrust, or drove, him away, or back: (T, M, K:) and struck, or beat, him. (M.) b3:  Also, (T, M, K,) aor. ـِ (M, K) and ثَفُنَ, (M,) inf. n. ثَفْنٌ, (T, M,) He followed him: (M, K:) or he came to him from behind him: (T, K:) or you say, جَآءَ يَثْفِنُ as meaning he came closely pursuing a thing, having almost overtaken, or reached, it: and مَرَّ يَثْفِنُهُمٌ, and يَثْفُنُهُمْ, he went along, or away, following them. (M.) b4:  And ثَفَنَ الشَّىْءَ, aor. ـِ inf. n. ثَفْنٌ, He kept, clave, clung, or held fast, to the thing. (M.) b5:  And ثَفَنَ الرَّجُلَ He associated with the man in such a manner that nothing of his case was hidden from him. (T.) [See also 3.]3 ثافنهُ, (T, S, K,) inf. n. مُثَافَنَةٌ, (T,) He sat with him: (S, K:) said to be derived from:ثَفِنَةٌ as though meaning he made the ثَفِنَة [or lower portion of the fore part] of his knee to cleave to the ثَفِنَة of the knee of the other: (S:) or he sat with him, knee to knee, or each sitting upon his knees, fighting with him. (T.) b2:  He kept, clave, or clung, to him, (T, K,) speaking to him. (T.) [See also 1.] b3:  He consulted with him in order to know what was in his mind; and kept, clave, or clung, to him, that he might know his inward state or case, or his opinion, or his mind. (M.) [See 1, last signification.] b4:  ثافنهُ عَلَى الشَّىْءِ He aided, or assisted, him to do the thing. (S, M.) 4 اثفن يَدَهُ It (work) rendered his hand rough, or callous. (S, K.) [See 1, first signification.]ثَقْنٌ Weight: or a weight: syn. ثِقْلٌ. (T.) ثَفَنٌ A disease in the ثَفِنَة [q. v.]. (K.) ثُفُنُ مَزَادَةٍ The sewed sides of a leathern water-bag. (S.) ثَفِنَةٌ [The callosity, or callous protuberance, upon] the knee; and what touches the ground, [in the act of lying down,] of [the callosity upon the breast called] the كِرْكِرَة and the سَعْدَانَة, [two words having the same meaning, for the latter of which the K erroneously substitutes the pl. form,] and of [each of the stifle-joints, i. e.,] the roots, or lower parts, of the thighs; of the camel: (M, K: *) pl. ثِفَنٌ and ثِفَانٌ (M, K) and ثِفِنَاتٌ: (T, S, M:) the ثَفِنَات of the camel are the parts that fall upon the ground when the animal lies down, and that become rough, or callous, such as the two knees, &c.; (S;) the parts that are next the ground when the camel lies down, one of them being the كِرْكِرَة, with which they are five in number [as explained above]: or, as some say, the ثَفِنَة is [only the stifle-joint, i. e.,] the joint between the thigh and the ساق [or leg properly so called], internally, [meaning anteriorly,] and [the knee, i. e.,] the joint between the shank and the arm: (T:) or, accord. to some, any part that is next the ground, of any quadruped, when he lies down like the camel and like the sheep. (M.) b2:  Hence, (TA,) [The stifle-joint, i. e.,] the joint between each thigh and leg, internally, [meaning anteriorly,] of a horse. (M, K.) b3:  Hence also, (TA,) The knee of a man: or [so accord. to the M, but in the K “ and,”] the place of union of the shank and thigh: (M, K:) [or the lower portion of the fore part of the knee, which becomes callous in consequence of much kneeling: see 3, first sentence. Hence,] 'Abd-Allah Ibn-Wahb Er-Rásibee  was surnamed ذُو الثَّفِنَاتِ (S, M, K *) from his much praying, (M,) because long prostration produced an [indurating] effect upon his ثفنات: (S, K:) and 'Alee Ibn-El-Hoseyn Ibn-'Alee, (K, TA,) known  by the appellation of Zeyn-el-'Ábìdeen, (TA,) was  [likewise] so surnamed, (K, TA,) because those parts of him upon which he prostrated himself were like the ثفنة of the camel in consequence of his much praying: (TA:) so too was 'Alee Ibn-AbdAllah Ibn-El-'Abbás. (A, K.) b4:  الثَّفِنَةُ مِنَ الجُلَّةِ, (K, [in some of the copies of the K الحُلَّة, which, as is said in the TA, is a mistake,]) or ثَفِنَتَا الجُلَّةِ, (AHn, M,) The two edges of the lower part of the جُلَّة, (AHn, M, K,) [meaning,] of the dates [contained in the receptacle thus called; app. because the dates in the edges become more dry and hard than the main portion]. (AHn, M.) A2:  Also A number, and a company, of men. (M, K.) A3: And [as fem. of ثَفِنٌ, which is perhaps unused,] A she-camel that strikes with her ثَفِنَات [here meaning her stifle-joints] on the occasion of her being milked. (M, K.) Her case is easier than that of the ضَجُور. (M.) مُثْفَنٌ, (M,) or ↓ مُثْفِنٌ, (TA,) may mean Large in the ثَفِنَات. (M, TA.) مُثْفِنٌ: see مُثْفِنٌ: A2:  and see also مُثَافِنٌ.مِثْفَنٌ لِخَصْمِهِ A man who keeps, cleaves, clings, or holds fast, to his adversary, or antagonist. (M.) [See also مُثَافِنٌ.]مُثَفِّنٌ: see مُثَافِنٌ.مِثْفَانٌ A camel whose ثَفِنَة [here meaning his stifle-joint] has hit, or hurt, his side and his belly, (K, TA,) usually. (TA.) مُثَافِنٌ Keeping to a person, or thing, constantly, perseveringly, or assiduously: (T, M:) or keeping, cleaving, or clinging, to another: as also ↓ مُثْفِنٌ or ↓ مُثِفِّنٌ (K, accord. to different copies,) [or, probably, مِثْفَنٌ, q. v.].