constabulary (n.)youdaoicibaDictYouDict[constabulary 词源字典]
1630s, "district under a constable," from Medieval Latin constabularia, from constabulus, Latinized form of Old French conestable (see constable). Meaning "organized body of constables" is from 1837. Earlier (mid-15c.) as an adjective, "pertaining to a constable."[constabulary etymology, constabulary origin, 英语词源]