Whew /(hwū)/

Whew

n. & interj.
  1. A sound like a half-formed whistle, expressing astonishment, scorn, or dislike.

Phrases & Compounds
Whew duck
the European widgeon.

Whew

v. i.
  1. To whistle with a shrill pipe, like a plover. [Prov. Eng. & Scot.]