/ Dictionary / Index B barrel bolt: Meaning and Definition of Find definitions for: bar'rel bolt" Pronunciation: [key] a rod-shaped bolt for fastening a door or the like, attached to one side of the door at the edge and sliding into a socket on the frame of the opening. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. barrel-ass barrel cactus Related Content Daily Word Quiz: cygnet Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language