What is Racket ?
Racket is (noun) 1. a light frame with tight strings, used for hitting the ball in games She bought a new tennis racket at the start of the summer season. She asked if she could borrow his badminton racket for the tournament. 2. a loud noise Stop that racket at once! The people next door make a terrible racket when they’re having a party. 3. an illegal deal which makes a lot of money Don’t get involved in that racket, you’ll pay a hefty fine if you get caught. He runs a cut-price ticket racket.
source: Easier English, Student Dictionary Upper Intermediate Level