رحل

أَرْحَلُ ذ (tropical:) A horse white in the back; (S, Mgh, K;) because it is the place of the رَحْل [or rather of the رِحَالَة]; (Mgh, TA;) the whiteness not reaching to the belly nor to the rump nor to the neck: (TA:) and a sheep or goat black in the back: accord. to Abu-l-Ghowth, the fem., رَحْلَاآءُ, applied to a mare, has the former meaning only: (S:) but شَاةٌ رَحْلَاآءُ means a sheep or goat, or a ewe or she-goat, white in the back, and black in the other parts; and likewise black in the back, and white in the other parts: (S, K: *) so says Abu-l-Ghowth: (S:) and it is also explained as meaning black, but white in the place of the saddle, from the hinder parts of the shoulderblades: also as meaning white, but black in the back: Az adds that such as is white in one of the hind legs is termed رَجْلَاآءُ [with جيم]. (TA.)