1. A beast like mutant with many deformative features.

2. Often described as "it" and "it" will often provoke one to puke

3. Attention Whore
Professor X of the X-Men needed a mutant so vicious and vile that he summoned "Pegasus".

"It" terrorized all of humanity and "it" constantly spit words on the VeSti.
by TidesKast October 12, 2005
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The flying horse that we all want for a pet. Don't get it confused with "Megapus"...that's something else.

A Pegasus is massively fat yet somehow can still support its own weight with its giant wings. Usually of the white/Caucasian heritage.
"Look at the Pegasus flying! I'm sure glad it's not a Megapus!'
by Hudo09 August 16, 2008
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Pegasus: a sis gendered male who enjoys being pegged.
She called him Pegasus because he liked being pegged in the ass. She laughed, it was like pegging a sis gendered male.
by Kitty Wallace March 28, 2018
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A gentleman who enjoys being sadomized/pegged by a woman.
I went out with Henry last night and it turns out he's a total submissive Pegasus. He loves to take it from behind
by XXXPAN November 11, 2017
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The act of preventing sex; to be a cock block.
That guy is such a Pegasus!
by pegasus545465464654654 September 25, 2010
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Battlestar Pegasus is a Mercury-Class Battlestar from the tv series Battlestar Galactica.Initially,she was presumed destroyed with the rest of the Colonial Fleet but she turned out to be quite well.

The Fleet was rejoiced when they found The Pegasus but hard disciplinary measurements implemented by Admiral Cain(Pegasus' Commanding Officer) soon led to a stand off between the Galactica and the Pegasus.This conflict was prevented by Starbuck's timely arrival.If it wasn't for a nearby Cylon Fleet,they would have fought each other.

Being a Mercury-Class Battlestar she is more advanced than Galactica.She is twice the size and needs only half the crew because of high automation technologies as indicated by Admiral Cain.She also has more fire power and armour.

After Cain's assassination, Commander Fisk took command of Pegasus only to meet the same doom.Command was given to Lee Adama for his successful commanding after the ship was led to a Cylon trap which she was confronted by three Baseships by Commander Garner.
Apollo and Kat do a flyby of the Battlestar Pegasus and all over her dispatched vipers.

Apollo: Galactica, Apollo, you are not going to believe what I'm looking at out her It's like a dream. Laughs

Adama: (on Galactica) It is a dream.
by Mustafa Uygur Aydin January 12, 2008
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It is a code word that means "Mega Sus" and it is used when there is a new member in a group or a person acting in a very weird way that seems sus.
Noor: Have you seen the new guy?

Mike: yes I have and he seems off.

Noor: that guy is pegasus with the "M"

Mike: what does that mean?
Noor: it means that she is mega sus
Mike: YESSSS, I felt that
by Da BiG BrAiN GuY May 22, 2021
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