Source : Webster's Revised Unabridged Dictionary (1913)

Coriaceous \Co`ri*a"ceous\ (k?`r?-?"sh?s), a. [L. coriaceous,
   fr. corium leather. See {Cuirass}.]
   1. Consisting of or resembling, leather; leatherlike; tough.

   2. (Bot.) Stiff, like leather or parchment.

Source : WordNet®

coriaceous
     adj : resembling or made to resemble leather; tough but pliable
           [syn: {leathered}, {leatherlike}, {leathery}]