1.Definition: a small wind instrument that produces a whistling sound by blowing into it

Category: Objects

2.Definition: acoustic device that forces air or steam against an edge or into a cavity and so produces a loud shrill sound

Category: Objects

3.Definition: an inexpensive fipple flute

Related Noun(s):pennywhistle

Category: Objects

4.Definition: the act of signalling (e.g., summoning) by whistling or blowing a whistle

"The whistle signalled the end of the game"

Category: General

5.Definition: the sound made by something moving rapidly or by steam coming out of a small aperture

Category: General