a waterbird with a broad blunt bill, short legs, webbed feet, and a waddling gait
a pure white thin-shelled bivalve mollusc found off the Atlantic coasts of America
an amphibious transport vehicle
visitors can board an amphibious duck to explore the city
lower the head or the body quickly to avoid a blow or missile or so as not to be seen
spectators ducked for cover
he ducked his head and entered
refrain from playing a winning card on a particular trick for tactical reasons
declarer ducked the opening spade lead