Wiktionary
night stick
n. (context US English) A stick used as a truncheon by police
Usage examples of "night stick".
He snatched out a poultry-knife, and dodged his way around Levi, while William banged away at the other eels with his night stick.
One official issue sword, one pike or halberd, one night stick or truncheon, one crossbow.
Montoya opened his desk drawer and drew out a policeman's night stick.
At that time, he took the night stick away from one of them and used it to strike both Shore Patrolmen about the head and chest, rendering them hors de combat.
When there was no answer, he took out his night stick and rapped sharply with the end of that.