Definition of truncheon in English:
1A short, thick stick carried as a weapon by a police officer.
- Rowan and Mayne limited constables' weapons to the truncheon, carried concealed until 1863.
- In France in May 1968, the gendarmerie and the police used water cannon, tear gas and truncheons to put down three-week-long Sorbonne riots, injuring nearly 400 persons.
- Police in riot gear and carrying truncheons pushed them back, and several were arrested.