Dummy  —n. (pl. -ies) 1 model of a human figure, esp. As used to display clothes or by a ventriloquist or as a target. 2 (often attrib.) Imitation object used to replace a real or normal one. 3 baby's rubber or plastic teat. 4 colloq. Stupid person. 5 figurehead. 6 imaginary player in bridge etc., whose cards are exposed and played by a partner. —attrib. Adj.