/ Dictionary / Index B building paper: Meaning and Definition of Find definitions for: build'ing pa"per Pronunciation: [key] heavy paper used esp. in the construction of frame buildings to block drafts, for insulation, etc. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. building line building permit Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language