/ Dictionary / Index T true rib: Meaning and Definition of Find definitions for: true' rib" Pronunciation: [key] — Anat. Anat. one member of the first seven pairs of ribs that are attached in humans to the sternum by costal cartilages. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. true rhyme true seal Related Content Daily Word Quiz: eureka Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language