n. Someone who has accumulated a vast amount of fame; a high-level celebrity.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. someone who is dazzlingly skilled in any field
Word Usage
"BROOKE ANDERSON, CNN ENTERTAINMENT CORRESPONDENT (voice over): SHOWBIZ TONIGHT can tell you there may be no one in Hollywood who has earned the title superstar more than Angelina Jolie."