Merc 

Like when you feel something so good.
or also
When you murder something

That female give me good head that felt like merc.
or also
I merc that video game to level 100.

Merc by J to da P July 5, 2004

merc 

A complete slut who goes from clan to clan without ever playing with any skill what so ever
ref to jew

Hey guys can i join your clan
Im in 1st now

merc by Anonymous August 12, 2003

merc 

to kill someone or to run really fast

i merced dis trippin nigga
homie was mercin on the race track

merc by J-20 September 6, 2003

merc 

noun - an overly used nickname

Yo merc, can i go to the game wit u?

merc by unoriginal merc March 14, 2004

merc 

To move at a quick pace or speed. As in very quick.

Dude, that Camery just merc'd it around us! What a predator!

merc by John Ralph July 25, 2006

merc 

an overly italian cs player who enjoys long walks on the beach with other boys. Talks too much.

i am merc. brecattah!

merc by Hughser February 24, 2005

Merc 

1. A whiny little failtroll who's friends all troll for great justice
2. Fail

1. God, its so much fun to fuck with Merc. He thinks he can actually troll us lolololololol.
2. lolmerc

Merc by willgame4food April 8, 2011