Top Definition
L4D
The acronym for the game Left 4 Dead. Left 4 Dead is a first person shooter Zombie-Survival based game made by Valve. In the game, you face thousands of zombies with other teammates in an attempt to escape and flee the growing infection. The game also is multiplayer, allowing NPC controlled allies to become actual players. The demo for Left 4 Dead was released on November 6th, 2008. The actual game was released on November 18th, 2008.
Guy 1: Hey, wanna play L4D with me?
Guy 2: Sure, I'll start the game up!
by Mr. Sexybeast November 17, 2008
2 more definitions
L4D
Abbreviation of Left 4 Dead
"Hey Billy are you up for L4D tonight?"
by HardlyNoticeable November 20, 2008
L4D
A common abbreviation used to define the game Left 4 Dead. Also, it's one of the achievements within, when a player spanwed as the zombie character "Tank" is able to neutralize all of the for survivors. The achievement has the same name as the game.
Dude #1: What's up man? How about we go play some L4D right now?

Dude#2: Yes, good idea.
by House dust mite December 01, 2008

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