Dictionary

To make a shrill, high-pitched sound by forcing air through the mouth. To produce a whistling sound, restrictions to the flow of air are created using the teeth, tongue and lips.

Example: Never whistle at a funeral.

To make a similar sound by forcing air through a musical instrument or a pipe etc.

Example: The stream train whistled as it passed by.

To move in such a way as to create a whistling sound.

Example: A bullet whistled past.

To send, signal, or call by a whistle.

A shrill, breathy sound; a whistle.