Definitions by Newbiage

zerging 

n. Using massive amounts of weak, or generic units, to attack an enemy.
Used widely in PlanetSide, to describe massive amount of soliders that spawn in a tower, and then attack a base.
It comes from the word wordzerg/word. Zergs in Starcraft were able to produce large amount of units very quickly.

I hate, when base assault comes down to zerging

zerging by Newbiage May 6, 2003