/ Dictionary / Index B boxful: Meaning and Definition of Find definitions for: box•ful Pronunciation: (boks'fool), [key] — pl. -fuls. as much as a box can hold: a boxful of cornflakes. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: boxful (Thesaurus) box frame box girder Related Content Daily Word Quiz: supercilious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language