| Coriaceous 1. (a.) Consisting of or resembling, leather; leatherlike; tough. 2. (a.) Stiff, like leather or parchment. Thesaurus Entries cartilaginous, cohesive, coriaceous, durable, fibrous, gristly, hard, hardy, lasting, leatherlike, leathery, resistant, ropy, sinewy, stiff, stringy, strong, stubborn, tenacious, tough, tough as leather, untiring, vigorous, viscid, wiry | ![]() |