/ Dictionary / Index B bum rap: Meaning and Definition of Find definitions for: bum' rap' Pronunciation: [key] — Slang. Slang. an unjust accusation, verdict, or punishment: He was sent to prison on a bum rap. an adverse opinion or judgment considered undeserved or unjust: The review was a bum rap, but I liked the play. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. bumpy bum-rush 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