roan UK /ɹəʊn/US /ɹoʊn/noun 3adjective 2forms 1 noun3 •An animal (such as a horse) that has a coat of a dark base color with individual white hairs mixed in. •The color of such an animal. •A kind of leather used for slippers, bookbinding, etc., made from sheepskin, tanned with sumac and colored to imitate ungrained morocco.Roan, a kind of leather used for shoes, slippers, and common bookbinding; prepared from sheep skins by tanning with sumach. — 1882 adjective2 •Having a coat of a dark base color with individual white hairs mixed in. •Made of roan (kind of leather). formsroans