security guard
US /sɪˈkjʊr.ə.t̬i ˌɡɑːrd/
UK /sɪˈkjʊr.ə.t̬i ˌɡɑːrd/

1.
guardia de seguridad, vigilante
a person whose job is to protect a building, place, or person and to prevent crime
:
•
The security guard checked our bags at the entrance.
El guardia de seguridad revisó nuestras bolsas en la entrada.
•
A security guard patrols the building every hour.
Un guardia de seguridad patrulla el edificio cada hora.