gray duck
noun
any of several ducks in which certain immature or female plumages are predominantly gray, as the gadwall and the pintail.
Origin of gray duck
First recorded in 1880–85
Words nearby gray duck
gray cataract,
gray catbird,
gray code,
gray column,
gray degeneration,
gray duck,
gray eminence,
gray fiber,
gray fox,
gray friar,
gray goods