/ Dictionary / Index B black oak: Meaning and Definition of Find definitions for: black' oak' Pronunciation: [key] any of several oak trees, as Quercus velutina, characterized by a blackish bark. the hard, durable wood of such a tree, used for making furniture, floors, etc. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. black nightshade black olive Related Content Daily Word Quiz: portent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language