1. (noun) large crested fish-eating diving duck having a slender hooked bill with serrated edges

• fish duck
• merganser
• sawbill

1. (noun) large crested fish-eating diving duck having a slender hooked bill with serrated edges

• american merganser
• mergus merganser americanus
• goosander
• mergus merganser
• hooded merganser
• hooded sheldrake
• lophodytes cucullatus
• mergus albellus
• smew
• mergus serrator
• red-breasted merganser

2. (noun) Old World gooselike duck slightly larger than a mallard with variegated mostly black-and-white plumage and a red bill

• shelduck

1. (noun) large crested fish-eating diving duck having a slender hooked bill with serrated edges

• sea duck

2. (noun) Old World gooselike duck slightly larger than a mallard with variegated mostly black-and-white plumage and a red bill

• duck

1. (noun) large crested fish-eating diving duck having a slender hooked bill with serrated edges

• genus mergus
• mergus

2. (noun) Old World gooselike duck slightly larger than a mallard with variegated mostly black-and-white plumage and a red bill

• genus tadorna
• tadorna