Keywords: whistle
Sign Definition
As a Noun
1. A small metal tube which you blow in order to produce a loud sound and attract someone's attention. English = whistle.
2. A sound that you make when you force your breath out between your lips or blow on a whistle. English = whistle.
As a Verb or Adjective
1. To make a sound by forcing air out between your lips; to blow on a whistle. English = whistle.
