What does ‘hype’ mean?

( n ) Exaggerated advertising. Don’t believe the hype about Rhonda; she isn’t all she is cracked up to be.
( n ) Hypodermic needle. If you aren’t on drugs, why are all these hypes in your room?
( adj ) Excellent, outstanding. Joe got a new drum kit; it’s really hype.
( v ) To build interest using exaggerated advertising (from ‘hyperbole’). Lotta Bolloni isn’t such a good actress but her films are hyped so she is popular.
( v ) To swindle by overcharging or short-changing. I think they hyped me back there at the store.