| Answer | Crossword Clue |
|---|---|
| SPIN | It may be applied to a tennis ball |
| BACKSPIN | It may be applied to a tennis ball |
| SPIN | It may be on a tennis ball |
| TOPSPIN | It may be put on a tennis ball |
| mathematics | The abstract science of number, quantity, and space. Mathematics may be studied in its own right (pure mathematics), or as it is applied to other disciplines such as physics and engineering (applied mathematics) |
| killed | (in tennis and similar games) Hit (the ball) so forcefully that it cannot be returned |
