'nightstick' definitions:

Definition of 'nightstick'

From: WordNet
noun
A short stout club used primarily by policemen [syn: truncheon, nightstick, baton, billy, billystick, billy club]

Definition of 'nightstick'

From: GCIDE
  • nightstick \nightstick\ n. A policeman's club.
  • Syn: truncheon, billy, billy club, billystick. [WordNet 1.5]