whistle

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whis·tle

(wis'ĕl),
1. A sound made by forcing air through a narrow opening such as pursed lips.
2. An instrument for producing a whistle.
[A.S. hwistle]

whistle

(hwĭs′ĕl)
1. A sound produced by pursing one's lips and blowing.
2. A tubular device driven by wind that produces a loud and usually shrill sound.
References in periodicals archive ?
Whitacre recently blew the whistle on his employer for price fixing, after secretly cooperating with the FBI to make video and audio tapes over a three-year period of meetings in which the alleged misdeed occurred.