- the club carried by a police officer; billy.
- a staff representing an office or authority; baton.
- the shattered shaft of a spear.
- Obsolete. cudgel; bludgeon.
- Archaic. to beat with a club.
Origin of truncheon
- mainly British a short thick club or cudgel carried by a policeman
- a baton of officea marshal's truncheon
- archaic a short club or cudgel
- the shaft of a spear
- (tr) to beat with a truncheon
Word Origin for truncheon
c.1300, "shaft of a spear," also "short stick, cudgel," from Old North French tronchon, Old French tronchon (11c.) "a piece cut off, thick stick, stump," from Vulgar Latin *truncionem (nominative *truncio), from Latin truncus (see trunk). Meaning "staff as a symbol of office" is recorded from 1575; sense of "policeman's club" is recorded from 1880.