n. A fine or other penalty imposed on a person for some offense or misdemeanor, usually a pecuniary fine.n. A blemish; a defect.n. Synonyms Amercement, forfeit, forfeiture, penalty, fine.To punish by fine or forfeiture; deprive of some possession as a penalty; deprive: formerly with either the crime or the criminal as object, now only with the latter: followed by in or of before the thing: as, to mulct a person in $300; to mulct a person of something.To punish, in general.