/ Dictionary / Index B box pleat: Meaning and Definition of Find definitions for: box' pleat" Pronunciation: [key] a double pleat, with the material folded under at each side. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. box office box plot Related Content Daily Word Quiz: careening Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language