/ Dictionary / Index O oak leather: Meaning and Definition of Find definitions for: oak' leath"er Pronunciation: [key] — Mycol. Mycol. a thick sheet of mycelium occurring in decayed oak wood. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. oak-leaf hydrangea oak-leaved geranium Related Content Daily Word Quiz: ontiguous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language