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A common strategy where a player mass builds a many weak units as he can, then rushes the enemy base. Usually works best early in the game. Taken from Starcraft, where often zerglings (really cheap unit that can be built in large droves quickly) would be sent at the start of the game to kill everyone in the first couple moments.
Zerg Player: Ah hahaha! I'm zerg rushing!
Protoss Player: Oh no, my precious zealots are too expensive for me to buy more than one. I'm screwed.
Terran Player: *Flys to higher ground* What a bunch of fags.
by Meggido February 28, 2008
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2
A term used for a swarming attack, and/or winning a battle by throwing bodies and outnumbering an opponent.

This term was derived off of a video game called Starcraft which had a tactic where you are able to rush opponents by mass producing zergs and rushing them
"Oh shit those bastards are zerg rushing us."
"All you pussies can do is Zerg Rush."
by ANtlas May 04, 2005
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3
A tactic relying on the zergs extremely fast build rates and the absurd cheapness of zerglings (a zergling is sorta a insect dog) basically you build like crazy churn off zerglings then bury the enemy under a tide of weak and feeble bugs,
very unsporting.
"screen full of zerglings, damn you rushing bastard ..."
by Darkevil June 23, 2005
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4
The battle tactic when an immense group of poorly equiped or low -level players/minions/characters swarms a much smaller group of well-defended/high-level characters/players and defeats with sheer numbers.
Originated from the game StarCraft, in which if timed correctly you could send a dozen zerglings (lowest-level soldier avalible) into the enemy's base before they could make defenses. Spread to include any battle tactic that involved massive amounts of zerglings to overwhelm the enemy's defense.
"The 2 dozen mid-20 level alliance just zerg-rushed the 60s attacking Darkshire."

"Why bother wasting resources on Ultralisks when 4 dozen zerglings can rip a Protoss base up like tissue paper in a zerg rush?"
by The Peanut Gallery December 15, 2005
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5
A tactic commonly used on the game Starcraft in which the race "The Zerg" are used in a quick strike.
Player 1:OMG ZERG RUSH

Player 2:KEKEKEKEKE LOL

Player 1:STFU NOOB
by John W. Kole December 25, 2004
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6
Actually a misnomer for a Zergling Rush, Zergrush refers to a tactic in which a player of StarCraft attempts to overrun an enemy with large masses of weak units (See Zergling) so early in the game that the enemy has not had enough time to properly defend himself. Can also be used to describe any occasion in which a person is swarmed something (i.e. animals, mobs, bills) and are completely unprepared.
I just lost to a Zergrush 2 minutes into the game. :(

Wow poor Lindsay Lohan; the paparazzi completely Zergrushed her.
by ABoyAndHisFlyingYeti July 15, 2011
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7
A tactic in video games (primarily the RTS genre) of sending weak, cheap units at an enemy base en-masse in order to achieve victory. This method is used best near the beginning of the match.

Originally started on the RTS game Starcraft due to the inexpensive Zergling unit being used in the manner described above.
Player: ZOMG Zerg Rush!!!
by Burkus May 15, 2009
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