柯林斯詞典security guard (security guards) 1. N-COUNT A security guard is someone whose job is to protect a building or to collect and deliver large amounts of money. 保安人員 返回 security guard劍橋詞典someone whose job involves preventing people going into places without permission , transporting large amounts of money , or protecting goods from being stolen 保安人員；警衛(wèi) 返回 security guard