mallard
/ˈmælɑːd/noun
(复同单, 或mallards)
1- the commonest duck of the northern hemisphere and the ancestor of most domestic ducks, the male having a dark green head and white collar绿头鸭。
1.1
- Anas platyrhynchos, family Anatidae.拉丁名Anas platyrhynchos, 鸭科。
词源
Middle English: from Old French 'wild drake'， from masle 'male'.