wallhack noun 1verb 1forms 3 noun1 •A patch enabling a player to cheat by modifying the properties of walls, as by making them transparent or nonsolid.He was so good, I figured I could learn something by watching it. I couldn't understand why I couldn't get anything at all from the demo, until I discovered he was using the wallhack. — 2002 verb1 •To use a wallhack.im like damn this guy is good.. then the next round... I noticed he wallhacked me... started shooting me before he came around and I was silent walking... — 2002 formswallhacked · wallhacking · wallhacks