| Rating | Solver | Clue |
|---|---|---|
| GEARWHEEL | Cog | |
| SPROCKET | Cog | |
| TOOTH | Gearwheel cog | |
| COGGED | Of Cog | |
| COGGING | Of Cog | |
| TEETH | Projections on cog wheels | |
| COG | To furnish with a cog or cogs. | |
| FACE | That part of the acting surface of a cog in a cog wheel, which projects beyond the pitch line. | |
| BOTTOM | To reach or impinge against the bottom, so as to impede free action, as when the point of a cog strikes the bottom of a space between two other cogs, or a piston the end of a cylinder. | |