Security guards, usually unarmed, that are hired by companies and rented out to agencies for things such as concerts or school security.
My school is full of rent-a-cops, armed with nothing tougher than their cell phones. Safe, it ain't!
by Fat Tony January 13, 2004
A slang term for a Security Guard (known as Security Officer in the business).

There are several kinds of people attracted to this work:

1.) The "Lifer": A loser in life who cannot do anything other than be a waste of space. These are the ones that make it harder for other people to perform a simple job of making sure a client's property doesn't burn down or get ransacked. They are insecure, lazy, and mentally slow. They think that they are somehow like Police or the Military. These tend to be in their late 30's and higher but you can see this sad excuse for existence in some 20 somethings that really fail at life. .

2.) College students: A lot of the younger guards you will run into who seem intelligent are usually in this class. Often this occupation allows for ample study time if done covertly. The pay rate is much better than most college jobs so they play it smart and do these kinds of jobs.

3.) Retired people: Surprisingly enough not every old guard you see will be an idiot. Often these are guys and gals who have retired and in order to have a supplemental income, they take on this job. They are often articulate and fairly intelligent for the most part.
816 Congress Avenue in Downtown Austin has a really bad Lifer at night. Go skate there in the alleyways to watch his dumbass in action. He's a real Rent-a-cop!
by Coca-Cola Kid December 20, 2009
A security guard privately hired to walk around a mall, school, concert, event, etc...
Usually rent-a-cops think they are better than everyone else, but usually have very sorry lives. A rent-a-cop usually sees no excitement in his job, so he will bust u for pretty much anything, just for fun
steve: that damn rent-a-cop yelled at me for giving my girlfriend a hug.

dale: oh yeah, that guy hates public displays or affection.

steve: a hug is a public display of affection?

dale: to a rent-a-cop it is!
by larry latte July 11, 2008
or rent-a-pig

a uniformed security guard
The guy was mad because he was caught shoplifting by a "rent-a-cop."
by Light Joker September 16, 2004
try being a "rent-a-cop" and see how you feel after an 8 hour shift. then tell me that mall security doesn't deserve any respect.
they all laughed when the rent-a-cop asked them to leave the property after they decided to harass a mall employee.
written by a 21 year old security guard that has no interest in becoming a real police officer, only has the job because it's better than fast food
by Grunger March 6, 2006
Public Safety, Constables (US), Code Enforcement, Safety Patrol, Bay Constables, any uniformed federal agency, railroad/airport/transit police, etc

AND

ALL security guards, special police.
Rent-a-cop are people who lack the skills to be real cops.
by No Name USA November 22, 2005
A obnoxious cop with a very large "ego" who is nothing but a waste of space in the police district. These low lives would rather stuff their faces with donuts at a nearby krispy creme or take a nice stroll into the neighborhood and arrest anyone for just about anything than perform their jobs properly. They enjoy harrassing citizens instead of helping them in a time of need. They are very adament about one's situation. Also dubbed as "donut eating bastards."
Cop: Let's see here...who can i harrass today? *officer targets a bunch of teens chatting* Cop: *shouts out window* Go home to your fucking mother! It's curfew! *cop drives off* Girl: It's 4:00 pm you stupid rent-a-cop!!!
by xnamidax November 1, 2011