emery wheel

English Thesaurus

1. a wheel composed of abrasive material; used for grinding (noun.artifact)

hypernym	:	wheel,
definition	:	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) (noun.artifact)

part meronym	:	grinder,
definition	:	a machine tool that polishes metal (noun.artifact)