Pronunciation: (wij'un), [key]
—pl. -eons, (esp. collectively) -eon for 1.
1. any of several common freshwater ducks related to the mallards and teals in the genus Anas, having metallic green flight feathers, a white wing patch, and a buff or white forehead, including A. penelope of Eurasia and North Africa, A. sibilatrix of South America, and the baldpate, A. americana, of North America.
2. Obs.a fool. Also,wigeon.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.