BOsomeone whose job is to guard money or a building 保安人员
Examples from the Corpus
security guard• His extra two years had come about because he'd shot a security guard in the leg with a twelve-bore.• A security guard came to smile at our picnic on the grass.• The dark suitedsecurity guardglowered at him from within the brightinterior of the shop.• Then he sneaked past the security guard without paying.