/ Dictionary / Index I inner-tuber: Meaning and Definition of Find definitions for: in•ner-tub•er Pronunciation: (in'ur t'bur, -ty'-), [key] — n. tuber (def. 2). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. inner tube inner-tubing Related Content Daily Word Quiz: spectral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language