also cleché, 1680s, "pierced through with a figure of the same kind," but also, of a cross, "having arms which spread or grow broader toward the extremities," from French cléché (17c.), from Latin *clavicatus "key-holed," or clavicella "little key," from clavis "key" (from PIE root *klau- "hook"). The cross sense perhaps from or merged with Latin clava "club, knotty branch."