/ Dictionary / Index R ribby: Meaning and Definition of Find definitions for: rib•by Pronunciation: (rib'ē), [key] — -bi•er, -bi•est. having prominent ribs: a ribby fabric. rib•by Pronunciation: (rib'ē), [key] — pl. -bies. a run batted in. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. ribbon worm rib cage Related Content Daily Word Quiz: simian Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language