a monster from greek mythology, sometimes mistaken by some (bizarrely) as some kinda dragon despite the fact it doesn't have wings and has many heads. Definitely not teal in colour.
- its not a dragon its a hydra. HYDRA
by Mtoiaaaaaaaaaaaaa July 2, 2005
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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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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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(intransitive verb) In massively multi-player online gaming, playing a game with multiple characters and/or accounts at the same time.
There's a reason the U.S. and Asia have separate game servers; The Asian server absorbs all the ninja-looting, script-running, kiddie Asians who hydra and play the game 36 hours a day, leaving the U.S. servers much more fun for us to play on.
by Icebreed April 4, 2006
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An extremely talented and versatile player of the JK3 video game.
by Will I am Fergasun April 8, 2005
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The best song by the band Toto, off their 1979 album of the same name. Tells about some hero who had a girlfriend who was captured by a dragon so he came to slay the dragon, but the girlfriend liked the dragon better.
You don't want your freedom, you don't want my love, you don't want your throat cut by the man you're thinking of.

Toto sings the song Hydra.
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An op, a person that did u dirty or just an overall bad person.
That boy is a hydra, he snitched on me and my boys. We don’t fuck with hydras.

Fuck that teacher he’s a hydra.
by Bashanigga February 16, 2020
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