·adj A drake; the male of Anas boschas.
II. Mallard ·adj A large wild duck (Anas boschas) inhabiting both America and Europe. The domestic duck has descended from this species. Called also greenhead.
a drake. North. ...
A glossary of provincial and local words used in England by Francis Grose
The male of the wild duck (Anas boschas). ...
The Sailor's Word-Book