كوح1 كَاحَهُ, [aor. ـُ inf. n. كَوْحٌ; and ↓ كوّحهُ, and ↓ اكاحهُ, and ↓ كاوحهُ; He fought with him and overcame him: (K:) so Az, explains كاوحهُ, inf. n. مُكَاوَحَةٌ: or, accord. to the M, ↓ كاوحهُ signifies he fought with him; and كاحه, he overcame him; (TA;) and ↓ كوّحهُ, inf. n. تَكْوِيحٌ, also has this last signification; (IAar, S, TA;) and so ↓ اكاحهُ, inf. n. إِكَاحَةٌ. (IAar, TA.) 2 كَوَّحَ See 1. b2:  Also كوّحهُ, (inf. n. تَكْوِيحٌ, TA,) He abased him; rendered him abject; syn. أَذَلَّهُ. (K.) b3:  It (the nose-rein) rendered him (a camel) submissive, or tractable. (TA.) 3 كَاْوَحَ See 1. b2:  Also كاوحهُ He reviled him, or vilified him, mutually; and treated him in an open manner (S, K) with opposition or altercation. (TA.) 4 اكاحهُ He destroyed him. (T, in this art; and K in art. كيح.) See 1.6 تَكَاوَحَا They two laboured, or strove, each with the other, to do evil, or mischief. (S, K.) كَاحٌ and ↓ كِيحٌ The foot, or base, (عُرْض,) of a mountain: (S, K:) [or] its face, or part facing the spectator, above its foot, or base; syn. سَنَدُ جَبَلٍ: (S:) or its foot, or base, (عرض) and most rugged part: or its سَفْح [i. q. عُرْض]; and the foot, or base, of its face; syn. سَفْحُ سَنَدِهِ: or كِيحٌ signifies the side (نَاحِيَة) of a mountain: and any rugged face of a mountain, above its foot, or base: and in some cases, the side of a valley, when it is rugged, but not unless consisting of the hardest and roughest of stones: (As, TA:) pl. of كَاحٌ, أَكْوَاحٌ; (M;) and (of ↓ كِيحٌ, TA,) أَكْيَاحٌ and كْيُوحٌ (K) and كِيَحَةٌ. (As, T.) b2: أَكْيَحُ ↓ كِيحٌ A rough or rugged [foot, or base, or face above the foot or base, &c., of a mountain]; an expression similar to يَوْمٌ أَيْوَمُ; (K, art. كيح;) the latter word being a corroborative;  for the سَنَد of a mountain is called كيح only because of its ruggedness and roughness. (TA.) كيحٌ: see كَاحٌ.