/ Dictionary / Index R Rambo: Meaning and Definition of Find definitions for: Ram•bo Pronunciation: (ram'bō), [key] — pl. -bos. a fanatically militant or violently aggressive person. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. rambling Rambouillet Related Content Daily Word Quiz: censure Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language