The Collaborative International Dictionary of English v.0.48:
Wigeon \Wi"geon\, n. (Zool.) A widgeon. [R.] [1913 Webster] WiggWordNet (r) 3.0 (2006):
wigeon n 1: freshwater duck of Eurasia and northern Africa related to mallards and teals [syn: widgeon, wigeon, Anas penelope]