
Whistle
Attention Signal
Used to grab attention in noisy environments or emergencies.

The lifeguard gave three short blasts on the whistle to alert the swimmers.
Sporting Events
Commonly used in sports to manage the play or practice sessions.

At the sound of the coach's whistle, the players stopped their drill.
Not a Toy
Although it can be small, it is not for casual use due to its piercing sound.

The security guard reminded the children not to play with the emergency whistle.
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