/ Dictionary / Index B bill of attainder: Meaning and Definition of Find definitions for: bill' of attain'der Pronunciation: [key] an act of legislature finding a person guilty of treason or felony without trial. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. billman bill of entry Related Content Daily Word Quiz: resilient Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language