1 definition by House dust mite

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 1, 2008