large crested fish-eating diving duck having a slender hooked bill with serrated edges
source: WordNet 3.0
Old World gooselike duck slightly larger than a mallard with variegated mostly black-and-white plumage and a red bill
source: WordNet 3.0
Any one of several species of large Old World ducks of the genus Tadorna and allied genera, especially the European and Asiatic species. (T. cornuta, or tadorna), which somewhat resembles a goose in form and habit, but breeds in burrows.