Noun
an important influential person
Source: WordNetBlessed is he who talks in circles, for he shall become a big wheel. Frank Dane
I don't profess to have music as my big wheel and there are a number of other things as important to me apart from music. Theatre and mime, for instance. David Bowie
Children, a lot of times, can't make their parents wrong because they have to live with them, because they have to love them. And when you're young, you can't get on your Big Wheel and go down to the Best Western. You've got to live there and you've got to figure it out. Lana Parrilla
Los Angeles is such a town of show business, and I'm a terrible celebrity. I find it difficult - it's the beast that must be fed. There's this big wheel of pictures and articles that goes around, and you get pinned on it. Julia Roberts
he thinks he's a big shot Source: Internet
she's a big deal in local politics Source: Internet