A small thing you blow into to make a loud, high sound, or the sound you make by blowing air through your lips.
This word comes from the sound it makes - like 'whist' or 'wheee!'
A whistle makes such a clear, happy sound - like a bird singing or the wind blowing! You can whistle a tune or use a whistle to call your friends at the playground.
Complete word intelligence in one call. Free tier — 50 lookups/day.