A member of a rock band, or a solo artist in the genre (the term usually implies celebrity status, or stardom).(noun)
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Use "rockstar" in a sentence
"The Apple iPad 2 was launched by the so-called "rockstar CEO" Steve Jobs today in San Francisco to a broad reception of live blogging, tweeting and "cloud" participation online."
"By putting Biden in charge of the stimulas, he can stand back and let his take the blame, why do you think he is letting Polosky and Reid run the presidency, while Obama runs around like a rockstar, that is above the fray."
"Lily deserves better than this judgemental washed up so called rockstar!"