look up any word, like dirty sanchez:
 
1.
A girl that only sleeps with RockStars and thus obtains some level of fame simply because of the penis that she's had inside her vagina.
That girl slept with every rock star I know, she's a Cockstar.
by Jesse Brede January 07, 2009
 
2.
A bad-ass who is a natural when it comes to rock star attitude and behavior.
Nikki Sixx
by mj August 14, 2003
 
3.
A member of a famous band who doesn't give a shit about his fans and sells his shit for ridiculously high prices, but people will still buy it because he's usually considered cute.

I.e, Kellin Quinn
Person 1: pfft, Sleeping with Sirens suck
Person 2: I know! They're such cockstars!
by kingjoshua August 23, 2013
 
4.
Any male perfomer, in adult film.
"Rocco Siffredi, is an UBER cock star!"
by D. Gould March 16, 2006
 
5.
A guy who knows how to use his cock in the bedroom, pornstar, stud
After Lisa came twice, she called MOCO a cock-star!
by MOCO & P-Phat February 11, 2009
 
6.
a rockstar energy drink that is mixed with vodka, and tequila.
cockstar will blow your cock off!
by floatinhed January 31, 2012
 
7.
a male pornstar or frequent fornicator
What would you like to be when you grow up son? Well Dad my girlfriend says I'm a total cockstar so I will go for that.
by Andy Sayles March 29, 2007