verb: strike or attack as a group, ambush
from Zerg around
osir na zog raun kom trikova we will strike from the shadows
The Zerg rush is a term used to describe an overwhelming attack maneuver of one team or player against another, and comes from the Zerg enemy in the game Starcraft. For an example of a Zerg rush, search "Zerg rush" in Google's web search.