Late Middle English. From Anglo-Norman amerciament, amerciamente, amerceament amercement, fine or its etymon post-classical Latin amerciamentum from amerciare + classical Latin -mentum.
Definition of amerciament in US English:
amerciament
nounəˈməːsɪəm(ə)nt
historical
Amercement.
Origin
Late Middle English. From Anglo-Norman amerciament, amerciamente, amerceament amercement, fine or its etymon post-classical Latin amerciamentum from amerciare + classical Latin -mentum.