A word mainly used a woman who is a total ditz
, and get by soley due to the fact that they're hot. Airheads are usually full of themself, obsesed with clothing & makeup, and are just plain dumb. They kill the words "like" and "totally", because those are like, totally every other word they, like, use.
My ex girlfriend is such an airhead, she bought $2000 worth of cloths on her credit card because she didn't know you still had to pay for it later.