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7.
ACR
Like the JCR (Junior Common Room) or MCR (Middle Common Room) in a college, the ACR is the Asian Common Room, which comprises all orientals, since they tend to only interact among themselves.

Members of the ACR are known as 'Ackers' or sometimes 'Acres'.
"I was going to watch TV in the JCR but when I got there it was filled with ACR members!"
by St Hugh November 14, 2007
 
1.
ACR
Literally means Alachua County Resident.
For the students attending the University of Florida, you'll notice white trash people with four teeth at Wal-Mart with their six children. They are a perfect example of an ACR. Don't make eye contact with them or they will pull out their shot guns and put a cap in your ass.
by Steven5912 September 15, 2005
 
2.
ACR
the BEST assault rifle in Call of Duty Modern Warfare 2 that pwns everyone
Dude, I leveled up in cod

Awesome, what level are you?

48, which means i get to use the ACR now.

that's sweet, now you're going to pwn!
by Sami Turner April 07, 2010
 
3.
ACR
ACR stands for Adaptive Combat Rifle, it is a Assault Rifle which is produced by Bushmaster and Remington Arms.

It can be compared with the FN-Scar, and the H&K XM8.

It is also the weapon with the lowest recoil and highest damage in Modern Warfare 2.
Player A:
Dude you just pwned the other Team! Can you tell me how to do that?

Player B:
ACR for teh win! Lulz
by TheRhodan October 12, 2010
 
4.
ACR
Alachua County Resident.

One born and raised in Alachua County, Florida. Usually not referred to as an ACR until college age. This is when the university students begin interacting with them. Thus the ACR label, in order to distinguish between the inexperienced out-of-towners and the more versed inhabitants.

Contrary to some small-minded opinions, the vast majority of Gainesville raised ACRs are not four-toothed, Wal-Mart dwelling white-trash, and simply have not had the same financial windfalls presented to them as some of the other students. Many do indeed go to the University of Florida, seeing as it is close to family and friends. With the exception of the small few who enjoy the people and setting and choose to stay, most ACRs are miserable until they get out, facing a great many trials and tribulations along the way. This is mainly due to the fact Gainesville, FL is Hell.
Ignorant Dickhead: For the students attending the University of Florida, you'll notice white trash people with four teeth at Wal-Mart with their six children. They are a perfect example of an ACR. Don't make eye contact with them or they will pull out their shot guns and put a cap in your ass.

Normal Human Being: Fuck off! This ACR dick wasn't so bad last night when your mom was rubbing her four meth-mottled teeth around on it!
by Greene Team July 22, 2011
 
5.
ACR
The most overused gun in MW3, not to mention it's overpowered. Everyone camps with it, and you can probably find one on the ground every other step you take. Mostly seen with a RDS or Silencer. Almost zero recoil, and it kills anyone at any range fast as hell.
Player 1: omg i use acr its sooooo gud im gud im a pro

Player 2: Get some skill.
by AGuyWhoHatesACR September 24, 2012
 
6.
ACR
A firearm that every nerd on the planet believes is the best weapon ever made because of MW2. The reality is that it will NEVER see military adoption because of its inferior durability and design to weapons already in use. It is chambered in 5.56x45mm NATO and is manufactured by Remington Defense and Bushmaster.
Loser: "dude the ACR is the best gun in the world! I pwn in cod with it!"

Firearms Expert: shoots Loser with a real HK-416, a superior weapon system
by EMR-22 November 10, 2012