Webster's Revised Unabridged Dictionary · 1913

Amercement

Amercement ({not transcribed}) , noun

[Old French amerciment.]

The infliction of a penalty at the discretion of the court; also, a mulct or penalty thus imposed. It differs from a fine, in that the latter is, or was originally, a fixed and certain sum prescribed by statute for an offense; but an amercement is arbitrary. Hence, the act or practice of affeering. [See Affeer.] — Blackstone

This word, in old books, is written amerciament.

Collocations (1)
Amercement royal , a penalty imposed on an officer for a misdemeanor in his office. — Jacobs