/ Dictionary / Index T tone-up: Meaning and Definition of Find definitions for: tone-up Pronunciation: (tōn'up"), [key] — n. an exercise for toning up one's body. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: tone-up (Thesaurus) tonette ton-force Related Content Daily Word Quiz: neologism Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language