| Answer | Crossword Clue |
|---|---|
| PURR | Sound of a cat or engine |
| PURR | Cat or engine sound |
| chuffs | sound of or like the exhaust of a steam engine |
| chuff | sound of or like the exhaust of a steam engine |
| purring | (of a vehicle or engine) Move smoothly while making such a sound |
| throatier | (of a sound such as a person's voice or the noise of an engine) Deep and rasping |
| throatiest | (of a sound such as a person's voice or the noise of an engine) Deep and rasping |
| chug | a dull explosive sound made by or as if by a laboring engine |
| knockless | of an engine, bearing or fuel, producing no knocking sound |
| ROAR | Crowd or engine sound |
| PURR | Cat or motor sound |
| PURR | Car or cat sound |
