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1.
1.A hack like an aimbot used in the majority of Multiplayer FPS that allows the player to pass through walls.

2.Hack that works like no clip mode
?That guy came from no where he's using WallHAX!
by n00bzilla September 24, 2003
 
2.
wall hax is a type of hack (or cheat) used in counter strike allowing the player to see through walls and shoot through walls.
P1: omg that noob is hacking
p2: yeah he is using wall hax
by tehfrog August 21, 2008
 
3.
Sarcastic term for a wallhack.
Somebody: OMG wallhax!
by Doomguy0505 October 01, 2007