A person hired by a private organization to guard a physical plant and maintain order.(noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "security guard" in a sentence
"Some of you may remember how quickly Richard Jewell, the security guard who found the bomb during the 1996 Olympics in Atlanta, went from hero to suspect."
"Using a finely honed psionic talent known as proprioception, the trim, angular-featured Betazoid security guard tapped into the unconscious mind of the semiconscious Koas."
"He found the large security guard standing in the middle of the living room, surrounded by some rather tacky-looking furniture, even tackier-looking statuary and other tchotchkes, and a rather nice painting of a much younger Susan and Edward in a suit and wedding dress."