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22.
Usually used to mean acting and dressing flamboyantly for women, but the word's roots actually lay in the competitive eating circuit.
To peacock is to thrust one's gut outwards in a flamboyant fashion. The peacocker will parade about the room with his gut out for the world to see. It's a sign of pomposity often seen after a hard fought victory. More and more though, arrogant, up and coming eaters will peacock in public settings or at a non-competitive eating function. This is offensive and occasionally leads to fights.

While there's nothing wrong with a little peacocking here and there, one should not abuse their gut and peacock too frequently. One should respect their gut and the guts of others by keeping their own gut to themselves. Only peacock when you have earned the right!
Slugger peacocked all day, everyday for a straight week, needless to say, Acun and Big Kahuna were outraged and challenged him the next day at the local Golden Corral.
by The REAL Acun October 15, 2010
0 7
 
23.
<name for a girl or female who thinks she is much better than anyone else>
person: "..and yeah, she said that everyone at that party was totally lame and she d rather spend the night anywhere else"
person2: "that gal's such a PEAcock!"
by eli.za.bet.h June 15, 2009
4 11
 
24.
1) A person who smells real bad and claims he has a large dick. Nobody likes this person.

2) A type of bird.

3) A man who is scared of women he does not know.
1. Molly: OMG, did you see Ivan?
Susie: Yeah hes such a peacock, I cant believe i went out with him.

2. I saw a peacock at the zoo.

3. Ivan acted like such a peacock at the party last night.
by Anomynous2 April 07, 2008
7 15
 
25.
A girl that looks awesome from the back, but busted from the front. Not to be confused with a butter or butterface (but-her-face) who has a hot body and a busted face. A peacock will have a jlo booty and tiny waist, but lopsided titties and a face that resembles what you saw in the toilet after you last all night drinking binge bacon dog cart adventure.
I was behind this chick at the market, her ass was out of control, but when she turned around she had a tummy like a pot bellied pig, total peacock!
by Ryan KK September 20, 2007
15 23
 
26.
An attractive (usually homosexual) male that is obsessed with mirrors. He is generally preoccupied with and often vain about his clothes and manners
"Gryphon is such a peacock!"
by They Were All Fake March 25, 2006
20 29
 
27.
A 3000 year-old teacher at Williamstown High School, NJ, who mispronounces many words like robot (robut) and alright (ehhwit). She teaches C++, some weird computer language that nobody cares about. She saw Jesus in the year 0 be born.
Peacock-

"Ehhwit" class, let's talk how a computer is a "robut."
by person's name has been witheld April 28, 2008
3 24