/ Dictionary / Index B bell crank: Meaning and Definition of Find definitions for: bell' crank" Pronunciation: [key] — Mach. Mach. a lever or rocker having two arms meeting at a pivot at a right angle, used for transmitting motion between two parts meeting at an angle. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. bell cow bell curve Related Content Daily Word Quiz: fabricate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language