/ Dictionary / Index B boresight: Meaning and Definition of Find definitions for: bore•sight Pronunciation: (bôr'sīt", bōr'-), [key] — v.t. to verify the alignment of the sights and bore of (a firearm). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. borescope boresome 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