Any one of several species of fresh-water ducks,
   especially those belonging to the subgenus Mareca, of the genus Anas.
   The common European widgeon (Anas penelope) and the American widgeon
   (A. Americana) are the most important species. The latter is called
   also baldhead, baldpate, baldface, baldcrown, smoking duck, wheat,
   duck, and whitebelly.