/ Dictionary / Index C crossbolt lock: Meaning and Definition of Find definitions for: cross'bolt lock" Pronunciation: (krôs'bōlt", kros'-), [key] a lock controlling two bolts moving in opposite directions, as to the top and bottom of a doorframe. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. crossbirth crossbones Related Content Daily Word Quiz: panacea Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language