shelduck(redirected from Shell duck)
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Any of various large waterfowl of the genus Tadorna of the Eastern Hemisphere, especially the Eurasian species T. tadorna, having black, white, and brownish-red plumage. Also called sheldrake.
n, pl -ducks, -duck, -drakes or -drake
(Animals) any of various large usually brightly coloured gooselike ducks, such as Tadorna tadorna (common shelduck), of the Old World
[C14 shel, probably from dialect sheld pied; related to Middle Dutch schillede variegated]
n., pl. -drakes, (esp. collectively) -drake.
1. any of several Old World ducks of the genus Tadorna, certain species of which have highly variegated plumage.
2. any of various other ducks, esp. the merganser.
[1275–1325; Middle English sheldedrake]