/ Dictionary / Index F floating rib: Meaning and Definition of Find definitions for: float'ing rib' Pronunciation: [key] — Anat. Anat. one member of the two lowest pairs of ribs, which are attached neither to the sternum nor to the cartilages of other ribs. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. floating policy floating screed Related Content Daily Word Quiz: hedonist Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language