A hydra can be seen as a dragon (one without wings) that has more than one head.
by Venator July 16, 2005
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a type of small freshwater polyp that is found near the surface and reproduces by budding.
At first I thought a hydra was a plant, but then I learned it was yet another creatre in the cnidrian(jellyfish) family.
by Light Joker May 17, 2004
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The rare occurance of a penis with more then one head.
OMG WHATS WRONG WITH IT

What? Its just a hydra.
by Scotsburn July 28, 2009
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A mythical creature usually with the likeness of a dragon. Has more than one or two heads.
There's the Hydra!

Bring out your broad sword!

SLICE HIS THROAT!

And grab his scrote.
by larstait October 29, 2003
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Hands down the most godly unit in starcraft.
My 200 hyrdas owned a billion firebat, 200 marines, 10 tanks, 49 ghosts, 72 goliaths and none died.
by Adeadlyliquid September 29, 2004
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(Blue) Hydra, a form of cannabis that tastes like blueberry
They smoked some dank blue hydra the other day. It was delicious.
by J Bump November 29, 2005
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When a girl's got three or more cocks in her mouth and they all blow at the same time. They then proceed to slap her in the back of the head making the jizz come out her nose. (variation of the Ice Dragon)
We gave her a sweet hydra last night...now she's dead...
by Xalac November 2, 2006
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