Because the men liked the signal.
The referee blew his whistle to signal that there was a penalty.
He blew a whistle to signal the start of the race.
The referee's whistle.
3 long blast to the ship whistle.
mostly to get kids attention or to signal for help
You have to whisper in the library so you won't disturb people who are reading.
A referee's whistle is commonly referred to simply as a "referee's whistle." In some contexts, it may be called a "sport whistle" or a "game whistle." These whistles are typically designed to produce a loud and sharp sound to effectively signal players and officials during a game or match.
the referee will blow his whistle and stop the play
The signal for a fire on boards is a long blast on the ship's whistle along with sounding of the vessel's general alarm.
whistle In swimming, the race actually begins with a beep from a starting system after the command take your mark.The referee turns control over to the starter with a long whistle. But the whistle does not start the race normally.When the electronic starting system malfunctions, a blank gun or whistle can be used to signal the start of the race.
A whistle can symbolize urgency, warning, or attention. In literature, it may represent a call to action, a signal of danger, or a means of communication. Whistles can evoke themes of alertness, readiness, or the need to pay attention.