Merc 

To kill someone as apposed to someone who kills. Once again, Hip-Hop doesn't know the difference between a verb and a noun.

I'm gonna Merc Tyron for his welfare check during lunch time.

Merc by MedullaPancreas August 6, 2011

merc 

Common misspelling for Murk

Person A: Dude I merc'ed this guy in COD last night
Person B: It's murk NEWB

merc by murkinallday October 12, 2011

merc 

To exit; To leave;

Hey. I'm about to merc so laters.

merc by MUR-k March 16, 2003

merc 

To exit or leave quickly.

It's time to merc out.

After the show we're mercin' to Dr. Robs crib.

merc by Big Cox June 1, 2006

Merc 

Adj: To Merc

1. To dominate in a ravenous fasion.
2. To embarrass
3. To ejaculate on everything in the immediate area

I was merc'in on fools in COD 4, when I got the AC130 I merc'ed my pants

Merc by fantastico78 February 8, 2010

Merc 

To repeatedly rape an opposing player in an online game (or in real life if that kind of stuff floats your boat). To reign down with a furry that would mildly intimidate Chuck Norris. Mainly associated with Call of Duty 6

Player 1: *knifes opposing player, turns around to find their tactical insertion.
Player 2: *Tactically inserts
Player 1: * knifes player 2* "GET MERC'D!!!!!!!!!

Merc by wardsback April 11, 2010

merc 

Thug a nigga
Kill
Murder Death Kill

When a nigga play Halo, he mercs fools

merc by Thug masta May 10, 2003