8
1. somebody who has achieved promotion quickly at work, only for it to be obvious that they cannot live up to the job, and hence experience a humiliating demotion
2. a star -rock\pop etc - who is talked about a lot in the press as though they are the next big thing, but then never deliver the goods.
After the planet - which is no longer a planet!
1. hear about Smithson - last weeks new MD? Got fired, the asshole. He's a real pluto.

2. Pete Doherty is just a total pluto
by chris firth August 24, 2006
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9
1. A loner reject planet that the solar system kicked out
2. Mickey Mouse's awesome dog
3. Your mum.
Sarah: I kinda feel sorry for Pluto, you know?
Bianca: What? The planet or the dog or what?
Sarah: the planet, DER.
by YOURMUMRATESME February 21, 2010
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10
A poor little planet that lost its title as planet recently and is now a "dwarf" planet. Pluto is beyond the Kuiper belt and crosses paths with Neptune every something or other years. It and its moon Charon orbit around each other.
Me: Pluto lost its title as planet. I feel bad for it.
Someone else: Its not a living thing so it doesn't matter.
Me: I STILL FEEL BAD FOR IT! FOR FOURTEEN YEARS I'VE BEEN TAUT THAT THERE WERE NINE PLANETS AND NOW THEIR TELLING ME THERE'S ONLY EIGHT! WHAT THE HELL!
by The Black Mew October 14, 2006
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11
1. one of the planets of our solar system. Ceres and "Xena" are also planets. Anything that is round, orbits a star and is NOT a star itself is a planet, no matter what those cretins in the IAU say.

2. a Disney cartoon dog
1. Pluto is a planet, damn it!

2. My mom posed with me and Pluto when we were in Disneyworld in Florida.
by I Saw U2 Live Twice October 06, 2006
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12
a planet that aint a planet no more in laymens terms. we just sent a probe there thats gonna reach in 2015 and it has 3 moons charon nix and hydra.it was demoted on august 24 2006 at like 8:00 am i think

oh and its also the dog in disney
bob used to be CEO for that company for 5 years but now he is foreman.man he got pluto'd
by amitima August 25, 2006
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13
1) The planet farthest from the sun that we know of. Recently reclassified as a "Dwarf-Planet".

2) The dog that is owned by that down-syndrome mouse, Micky.
1) Pluto sure is far away...

2) Micky Mouse's dog is Pluto.
by Sirius123 May 08, 2007
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14
noun: meaning "demotion"; related to the verb "plutoed" which means "demoted".
His performance was way down, but he didn't get demoted, I think he barely dodged a pluto.
by ScalRonnie September 04, 2007
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