Mallard
Mallard , noun
[French malari,from mâle male + -art = -ard. See Male, a., and -ard.]
1.
(Zoology) A drake; the male of Anas boschas.
2.
(Zoology) A large wild duck (Anas boschas) inhabiting both America and Europe. The domestic duck has descended from this species. Called also greenhead.