/ Dictionary / Index K Keystone Kop: Meaning and Definition of Find definitions for: Key'stone Kop' Pronunciation: (kop), [key] Usually,(in early silent movies) a team of comic policemen noted for their slapstick routines. a person noted for bungling inefficiency: a backfield of Keystone Kops. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. keystone joist Keystoner Related Content Daily Word Quiz: portent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language