/ Dictionary / Index T tonner: Meaning and Definition of Find definitions for: ton•ner Pronunciation: (tun'ur), [key] — n. something having a specified weight in tons (used in combination): The sailboat was a twelve-tonner. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. tonneau Tönnies Related Content Daily Word Quiz: frugal Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language