security guard
noun [ C ] uk/sɪˈkjʊə.rɪ.ti ˌɡɑːd/ us/sɪˈkjʊr.ə.t̬i ˌɡɑːrd/
保安人员；警卫
someone whose job involves preventing people going into places without permission, transporting large amounts of money, or protecting goods from being stolen
Compare: attendant nouncaretaker (IN A BUILDING) conciergecustodian janitor keeper (CARER)porter (PERSON) stewardwarden (MANAGER)watchmandoorman
See also: guard noun (PERSON WHO PROTECTS)