رسح1 رَسحَ, aor. ـَ inf. n. رَسَحٌ, (L, Msb,) He had little flesh, or was scant of flesh, in his posteriors and thighs: or he had small buttocks, sticking together: (L:) or he had little flesh in his thighs. (Msb.) 4 ارسح It rendered a person scant of flesh in the posteriors (S, A) and thighs. (S.) رَسَحٌ Paucity of flesh in the posteriors (S, A, L, K) and thighs: (S, L, K:) or smallness of the buttocks, and their sticking together: (L:) or paucity of flesh in the thighs. (Msb.) رَسِحٌ Having little flesh in his thighs. (Msb.) [See also what follows.]أَرْسَحُ A man (S, L) having little flesh in his posteriors (S, A, L) and thighs: (S, L:) or having small buttocks, sticking together: (L:) fem.رَسْحَآءُ; applied to a woman: (S, A, L:) pl. رُسْحٌ. (S, K.) [See also رَسِحٌ.] الأَرْسَحُ means The wolf: (TA:) [for] every wolf is [termed] أَرْسَح because of the lightness [of the flesh] of his haunches: (S, A, * K:) and so is the سِمْع [a mongrel beast, the offspring of a wolf begotten from the hyena]. (TA.) b2:  Also, the fem., A foul, an ugly, or an unseemly, woman: (K, TA:) though disapproved by MF. (TA.)