- a duck, Anas platyrhynchos, common over most of the N hemisphere, the male of which has a dark green head and reddish-brown breast: the ancestor of all domestic breeds of duck
WordReference Random House Learner's Dictionary of American English © 2017
- Birdsa common wild duck from which the domestic ducks are descended.
- Birdsa common, almost cosmopolitan, wild duck, Anas platyrhynchos, from which the domestic ducks are descended.
- Middle French, Old French mallart mallard drake, drake; see male, -ard
- Middle English 1275–1325