Muscovy duck

WordReference Random House Unabridged Dictionary of American English © 2025

Mus′covy duck′, 

1. Birds a large, crested, wild duck, Cairina moschata, of tropical America, that has been widely domesticated. Also called musk duck. 

• 1650–60

Collins Concise English Dictionary © HarperCollins Publishers::

Muscovy duck, musk duck noun

1. a large crested widely domesticated South American duck, Cairina moschata, having a greenish-black plumage with white markings and a large red caruncle on the bill

Etymology: 17th Century: originally musk duck, a name later mistakenly associated with Muscovy