Pronunciation: (kop), [key]
1. Usually, Keystone Kops. (in early silent movies) a team of comic policemen noted for their slapstick routines.
2. Also,Key'stone Cop'.a person noted for bungling inefficiency: a backfield of Keystone Kops.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.