1. The imposition of a discretionary fine or penalty by a court, esp. on an official for misconduct (an amercement proceeding).
2. The fine or penalty so imposed (an amercement charged to the sheriff for failing to return the writ of execution). — Also termed cashlite; (archaically) amer-ciament; merciament. [Cases: Sheriffs and Constables 125. C.J.S. Sheriffs and Constables §§ 335–385.]