吹哨聲
Whew \Whew\ (hw[=u]), n. & interj. A sound like a half-formed whistle, expressing astonishment, scorn, or dislike. {Whew duck}, the European widgeon. [Prov. Eng.] Whew \Whew\, v. i. To whistle with a shrill pipe, like a plover. [Prov. Eng. & Scot.]