| Answer | Crossword Clue |
|---|---|
| SLIPPAGE | Gear teeth trouble |
| CARIES | Teeth trouble |
| COGS | Gear teeth |
| COGS | Gear teeth. |
| MESHES | Engages, as gear teeth |
| MESH | Engage, as gear teeth |
| COGS | Sets of gear teeth |
| MESH | Engage as gear teeth, |
| MESH | The engagement of gear teeth. |
| PINION | Gear with a small number of teeth |
