/ Dictionary / Index W wild rubber: Meaning and Definition of Find definitions for: wild' rub'ber Pronunciation: [key] rubber obtained from trees growing wild. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. wild rosemary wild rye Related Content Daily Word Quiz: arboreal Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language