| emery wheel | | |
| n. (artifact) | 1. emery wheel, grinding wheel | a wheel composed of abrasive material; used for grinding. |
| ~ grinder | a machine tool that polishes metal. |
| ~ wheel | a simple machine consisting of a circular frame with spokes (or a solid disc) that can rotate on a shaft or axle (as in vehicles or other machines). |
| grinding wheel | | |
| grindstone | | |
| n. (artifact) | 1. grindstone | a revolving stone shaped like a disk; used to grind or sharpen or polish edge tools. |
| ~ sharpener | any implement that is used to make something (an edge or a point) sharper.; "a knife sharpener" |
| ~ stone | building material consisting of a piece of rock hewn in a definite shape for a special purpose.; "he wanted a special stone to mark the site" |
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