truncheon
noun
[ ˈtrʌn(t)ʃ(ə)n ]
• a short, thick stick carried as a weapon by a police officer.
Similar:
club,
baton,
cudgel,
bludgeon,
stick,
staff,
billy,
billy club,
blackjack,
nightstick,
life preserver,
cosh,
Origin:
Middle English (denoting a piece broken off (especially from a spear), also a cudgel): from Old French tronchon ‘stump’, based on Latin truncus ‘trunk’.