Duck down (5)

I believe the answer is:

eider

This clue is a double definition.

'duck' is the first definition.
(eider is a type of duck)

'down' is the second definition.
(I've seen this before)

(Other definitions for eider that I've seen before include "Duck providing fine down" , "Type of duck" , "Downy sea duck" , "Sea-duck" , "Breed of duck" .)

I've seen this clue in The Irish Independent, the LA Times, The Globe and Mail, The Wall Street Journal, the Penny Press, The Guardian and the King Feature Syndicate.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.