/ Dictionary / Index C cork tree: Meaning and Definition of Find definitions for: cork' tree" Pronunciation: [key] the cork oak, Quercus suber, of the beech family. any of several Asian citrus trees of the genus Phellodendron, having a corky bark. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. corkscrew flower corkwood Related Content Daily Word Quiz: digression Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language