| Answer | Crossword Clue |
|---|---|
| HUM | Motor sound |
| PURR | Motor sound |
| DRONE | Motor sound. |
| PING | Motor sound |
| PUTPUT | Motor sound. |
| PURR | Motor sound. |
| PURR | Good motor sound. |
| DRONE | Airplane motor sound. |
| PURR | Good motor sound |
| PING | Unfortunate motor sound |
| PURR | Cat or motor sound |
| CHUG | Sound of a motor. |
| PURR | Sound from Tabby's "motor" |
| RRRRR | Sound of a motor. |
| PURR | Sound of a motor. |
| HUM | Sound of an airplane motor. |
| PUTPUT | Sound of an outboard motor. |
