Definition of security guard in US English:
 security guard
nounsəˈkyo͝orədē ɡärdsəˈkjʊrədi ɡɑrd
A person employed to protect a building against intruders or damage.
 Example sentencesExamples
-  Then a security guard from a nearby building signaled to me that I was being stopped.
 -  A night security guard later noticed the vehicle had been moved and assumed it had been done by staff during the day.
 -  Some builders have gone as far as to hire a security guard to watch the homes under construction during the night.
 -  What do you see as your job as a security guard in a high street sports shop?
 -  A security guard was exposed as the inside man because he claimed to have witnessed things he could not have seen.
 -  As he was being escorted from the building there was a struggle and the security guard's gun was discharged.
 -  The security guard challenged him outside the building and the youngster gave himself up.
 -  They burst into the bank and pointed the shotgun at the security guard.
 -  I wouldn't want to have been the security guard on Old Man watch that night.
 -  We left the building, exclaiming to the security guard that we never intended to come back.
 -  A security guard was today under armed guard in hospital after being shot in the thigh outside a nightclub.
 -  He might have been a security guard in one of those giant office buildings, paid to watch a whole wall of monitors.
 -  A skinny mall Santa who may also be a security guard watches me watch him.
 -  Some reports said the bomber shot and killed a security guard at the entrance before rushing in to the restaurant.
 -  When I was leaving I happened upon the security guard who comes on for the night shift.
 -  You have to avoid the security guard when snapping your picture on the sidewalk.
 -  As the security guard saw Anthony's car, he opened the gate and Anthony nodded to him.
 -  The office security guard usually inspires affection rather than paranoia.
 -  What we can see is a man who we'd seen earlier working as a security guard in a building below.
 -  When, inevitably, I did get stopped by a security guard, she just seemed a bit bored and fancied a chat.
 
 Synonyms
sentry, sentinel, nightwatchman