Source : Webster's Revised Unabridged Dictionary (1913)

Crebricostate \Cre`bri*cos"tate\ (kr[=e]`br[i^]*k[o^]s"t[asl]t),
   a. [L. creber close + costa rib.] (Zo["o]l.)
   Marked with closely set ribs or ridges.