wolf whistle
I whistle when I'm scared.Sometimes, I whistle but only make a blowing sound.I whistle to keep a good mood.
what is a whistle used for in first aid
The referee blew his whistle to signal that there was a penalty.
He blew a whistle to signal the start of the race.
You whistle to it.
You have to whisper in the library so you won't disturb people who are reading.
Coach/whistle Traffic Cop Lifeguard Train Engineer
whistle
you would use it as any other whistle, just blow into it. however, it does not make any noise to us, but dogs can hear it
He could hear the faint sound of a whistle coming from a distance.
The reff throws the ball into the middle of two players