whistle

To produce a clear musical sound by forcing air through the teeth or through an aperture formed by pursing the lips.

To produce a clear, shrill, sharp musical sound by passing air over or through an opening.

To produce a high-pitched sound when moving swiftly through the air.

To produce a high-pitched sound by the rapid movement of air through an opening or past an obstruction.

To emit a shrill, sharp, high-pitched cry, as some birds and other animals.