The Collaborative International Dictionary
Whewer
Whewer \Whew"er\, n. [Cf. W. chwiwell a widgeon, chwiws widgeons, waterfowls; or cf. E. whew, v. i.] (Zo["o]l.) The European widgeon. [Prov. Eng.]
Wiktionary
whewer
n. (context UK dialect English) The European widgeon.