amercement(n = noun.possession) fine, mulct - money extracted as a penalty;
is a kind of penalty
has particulars: library fine
Derived form verb amerce2
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. [1913 Webster]
" This word, in old books, is written
N penalty, retribution, pain, pains and penalties, weregild, wergild, peine forte et dure, penance, the devil to pay, fine, mulct, amercement, forfeit, forfeiture, escheat, damages, deodand, sequestration, confiscation, premunire, doomage.