dog, police, train
guard's, referee's, etc.
steam
penny, tin

blow, blow on, sound
A train sounded its whistle in the distance.

blow, go, sound
The referee's whistle went just before the ball crossed the line.

a blast on a whistle
He gave a short blast on his whistle.

loud
high, high-pitched, piercing, sharp, shrill
low
long
short
silent
He pursed his lips in a silent whistle.

wolf
final (sports)
From the opening to the final whistle, Gray is relentless.

give, let out
hear

with a whistle
The train entered the tunnel with a shrill whistle.

whistle of
She gave a low whistle of admiration.