دهم1 دَهِمَهُمْ (S, Msb) and دَهَمَهُمْ, (Msb,) aor. ـَ (S, Msb,) inf. n. دَهْمٌ, (TA,) It (an event, S, Msb) came upon them, or happened to them, suddenly, unexpectedly, without their being aware of it, or without any previous cause; surprised them; took  them by surprise, or unawares: (Msb:) or دَهَمَكَ and دَهَمَكَ, aor. ـَ it (anything) came upon thee so as to overwhelm thee, or cover thee, or as a thing that overwhelmed thee, or covered thee. (Th, K.) And دَهِمَتْهُمُ الخَيْلُ [The horsemen came upon them suddenly, &c.]: and AO says that دَهَمَتْهُم is a dial. var. thereof. (S.) See also دَهْمٌ, below.2 دَهَّمَتِ النَّارُ القِدْرَ, inf. n. تَدْهِيمٌ, The fire blackened the cooking-pot. (ISh, K.) 4 ادهمهُ It (an action done to him, Th, TA) displeased, grieved, or vexed, him, (Th, K,) and angered him. (Th, TA.) 5 تَدَهَّمَ [تدهّم is said by Golius, as on the authority of the K, to be syn. with تدام (meaning تدأّم); but app. on no other ground than that of his finding it there said that المُتَدَهَّمُ is syn. with  المُتَدَأَّمُ.]9 ادهمّ, inf. n. اِدْهِمَامٌ, He (a horse) became أَدْهَم, (S, K,) i. e. black. (S, * K, * TA.) and ↓ ادهامّ, inf. n. اِدْهِمَامٌ, It (a thing) was, or became, black. (S, K.) [Hence,] الزَّرْعُ ↓ ادهامّ The seedproduce [became of a dark green colour, or] was  overspread with blackness, by reason of abundance of moisture, or irrigation. (JK, TA.) And in like manner, الرَّوْضَةُ ↓ ادهامّت and ادهمّت [The meadow became of a dark green colour, &c.]. (JK.) And الخُضْرَةُ ↓ ادهامّت The greenness became intense [so as to appear blackish, or so as to appear black when viewed from a distance]. (TA.) 11 ادهامّ: see the next preceding paragraph, in four places.دَهْمٌ A malicious, or mischievous, or grievous, act, by which one takes others unawares, or by surprise. (TA from a trad.) A2:  Also, (S, TA,) or ↓ دُهْمٌ, (JK, and so in one place in the TA,) A numerous company: (Lth, JK, TA:) or a multitude: pl.دُهُومٌ. (S.) A rájiz says, جِئْنَا بِدَهْمٍ يَدْهَمُ مَجْرٍ كَأَنَّ فَوْقَهُ النُّجُومَا [We came with a numerous company that would overwhelm the other numerous companies; a great army, as though the stars were above it]. (S, TA.) [See also دَهْمَآءُ, voce أَدْهَمُ.] And one says, هُوَ ↓ مَاأَدْرَى أَىُّ الدُّهْمِ, and اللّٰهِ هُوَ ↓ أَىُّ دُهْمِ, (JK, K, TA,) or اىّ الدَّهْمِ هو, and اىّ دَهْمِ اللّٰه هو, (so in the CK and in my MS. copy of the K,) i. e. I know not what one of the creation, or of mankind, he is, and what one of the creatures of God he is. (K, * TA.) دُهْمٌ: see the next preceding paragraph, in three places. b2:  Also pl. of أَدْهَمُ [q. v.]. (TA.) دُهْمَةٌ Blackness: (JK, S, Msb, K:) and a deep ash-colour [without any tinge of white: see أَدْهَمُ]. (ISd, TA.) A2:  Also A brown ewe (نَعْجَةٌ حَمْرَآءُ): [see also دَهْمَآءُ, voce أَدْهَمُ:] and sing. of دُهَمٌ signifying a certain sort [or breed] of sheep or goats. (JK. [But I do not find either of these two significations in any other lexicon.]) الدَّهْمَانُ The night: opposed to الوَضَّاحُ meaning “ the day. ” (L in art. وضح.) [Hence,] ثِنْىُ دَهْمَانَ The prayer of nightfall: opposed to بِكْرُ الوَضَّاحِ meaning “the prayer of morning.” (L and K in that art.: but in the CK and in a MS. copy of the K, instead of دَهْمَانَ we find دُهْمانَ.) دُهَامٌ: see أَدْهَمُ: b2:  and see دُهَامِيَّةٌ.الدُّهَيْمِ Calamity, or misfortune; (JK, S, K;) as also أُمُّ الدُّهَيْمِ; (S, K;) and ↓ الدُّهَيْمَآءُ, (JK, S,) dim. of الدَّهْمَآءُ [fem. of الأَدْهَمُ], so called because of its darkness: (S, TA:) or الدَّهَيْمَآءُ signifies black, dark, trial or conflict and faction or sedition or the like; and the dim. form is used to denote enhancement: (Sh, TA:) and ↓ الدَّهْمَآءُ signifies black, dark, calamity or misfortunes: (TA:) calamity, or misfortune, is termed الدُّهَيْمُ because of its darkness: (TA:) or, originally, (S,) this was the name of the she-camel of 'Amr  Ibn-Ez-Zebbán Edh-Dhuhlee, who was slain, with his brothers, and their heads were put upon her, (S, K, TA,) in sacks hung upon her neck, and she returned to Ez-Zebbán: (TA:) whence the saying, أَثْقَلُ مِنْ حِمْلِ الدُّهَيْمِ [Heavier than the burden of Ed-Duheym]: (S:) and أَشْأَمُ مِنَ الدُّهَيْمِ [More unlucky than Ed-Duheym]: (S, K, TA:) or, as some say, seven brothers were slain in a warring and plundering expedition, and were put upon Ed-Duheym; and hence the name became proverbial as applied to any calamity or misfortune. (TA.) A2:  دُهَيْمٌ also signifies Foolish, or stupid. (K.) إِبِلٌ دُهَامِيَّةٌ Certain camels: so called in relation to ↓ الدُّهَامُ, the name of a certain stallion-camel. (TA.) الدُّهَيْمَآءُ: see الدُّهَيْمُ.أَدْهَمُ Black; (JK, S, * Mgh, Msb, * K;) as also ↓ دُهَامٌ: (K:) the former is applied in this sense to a horse, (S, * Mgh, Msb, * TA,) and to a camel, &c.: (TA:) or, applied to a camel, of a deep ashcolour without any tinge of white; (As, S, Msb, K;) when of a deeper hue, so as to be very black, he is termed جَوْنٌ: (S:) or, as some say, applied to a camel, like أَصْفَرُ, [in this case meaning black with some intermixture of yellow,] but less black: (TA:) fem. دَهْمَآءُ; which, when applied to a sheep (S, M, Msb, K) or goat, (S, Msb,) means of a pure or an unmixed brown colour (خَالِصَةُ الحُمْرَةِ): (S, M, Msb, K:) pl. دُهْمٌ. (TA.) The Arabs say, مُلُوكُ الخَيْلِ دُهْمُهَا [The kings of horses are the black thereof]. (TA.) And فَرَسٌ أَدْهَمُ بَهِيمٌ A black horse in which is no intermixture of colours. (TA.) And لَا آتِيكَ مَا حَنَّتِ الدَّهْمَآءُ [I will not come to thee as long as she (among the camels) that is of a deep ash-colour without any tinge of white reiterates her yearning cry after her young one; meaning, ever]. (Lh, TA.) and رَمَادٌ أَدْهَمُ Black ashes. (TA.) b2:  حَدِيقَةٌ دَهْمَآءُ and ↓ مُدْهَامَّةٌ (tropical:)  [A walled garden] green inclining to black. (K.) Hence, (K,) ↓ مُدْهَامَّتَانِ, (S, K,) in the Kur [lv. 64], (S, TA,) [Two gardens (جَنَّتَانِ)] of which the greenness inclines to blackness; for every green plant, when its abundance and its moisture, or irrigation, are complete, inclines to blackness: (Zj, TA:) or black by reason of intense greenness arising from abundant moisture, or irrigation; and everything that is green (أَخْضَر) the Arabs term أَسْوَدُ. (S, TA.) b3: رَبْعٌ أَدْهَمُ [A place of alighting or abode] recently  occupied by the tribe; [because blackened by their fires &c.:] pl. أَرْبُعٌ دُهْمٌ. (TA.) And أَثَرٌ أَدْهَمُ A new, or recent, mark, trace, or vestige: (As, K:) and أَغْيَرُ means one that is “old, becoming effaced:” (As, TA:) and the former means also old, becoming effaced; (K;) as some explain it; (TA;) thus  having two contr. significations. (K.) and وَطْأَةٌ دَهْمَآءُ A new, or recent, footstep, or footprint: and غَبْرَآءُ means “becoming effaced:” or the former means one that is becoming effaced, because it has become obscure to him who seeks it; (JK;) or an old footstep, or footprint: and حَمْرَآءُ means one that is “new, or recent.” (S.) [See also أَغْبَرُ.] b4: الدَّهْمَآءُ also signifies (tropical:)  The cooking-pot: (JK, S, A, K:) or the black cooking-pot: (ISh, TA:) and the old cooking-pot. (K. [But it is implied in the TA that this last meaning is a mistake, occasioned by an omission; and that, instead of القِدْرُ وَالقَدِيمَةُ, (in the CK القِدْرُ القَدِيمَةُ,) we should read, القِدْرُ وَالوَطْأَةُ الدَّهْمَآءُ القَدِيمَةُ, explained above. Accord. to Golius, on the authority of a gloss in the KL, أَبُو الأَدْهَمِ signifies The great cooking-pot  in which a whole sheep is cooked at once.]) b5: And The twenty-ninth night of the [lunar] month: (JK, K:) because of its blackness. (TA.) and [the pl.] الدُّهْمُ Three nights of the [lunar] month  [during which is the change of the moon]: (K:) because they are black. (TA.) b6:  See also الدُّهَيْمُ. b7:  [Used as a subst.,] أَدْهَمُ signifies also A shackle or fetter, or a pair of shackles or fetters; syn. قَيْدٌ: (S, K:) because of the blackness thereof: accord. to AA, of wood: (TA:) or a heavy shackle or fetter or a pair of shackles or fetters: syn. أَدَاهِمُ: (S, K:) because of the blackform of pl., which is proper to substs., because the quality of a subst. is predominant in it. (TA.) b8: And [the fem.] دَهْمَآءُ signifies (assumed tropical:)  A multitude, or large number: (K:) and (assumed tropical:)  a company of men; (Ks, S, K; *) and multitude thereof: (Ks, TA:) or (tropical:)  the generality, the common mass, or the main part [thereof]: (Z, TA:) or (assumed tropical:)  the commonalty, or common people. (Mbr, Har p. 671.) [See also دَهْمٌ.]A2:  Also, دَهْمَآءُ, The aspect, appearance, mien, guise, or garb, of a man. (JK, S, * K.) A3: And الدَّهْمَآءُ A certain herb, or tree, green, and broad in the leaves; (JK;) or a certain broad herb, (K,) having leaves and twigs, resembling the قَرْنُوَة; (TA;) with which one tans. (JK, K.) مُدْهَامَّةٌ: see the next preceding paragraph, in two places.مُتَدَهَّمٌ A catamite; i. q. مَأْبُونٌ and مِثْفَرٌ and مِثْفَارٌ (AA, TA in the present art. and in art. دثر,) and مُتَدَأَّمٌ. (K, TA.)