brake pad

English Thesaurus

1. one of the pads that apply friction to both sides of the brake disk (noun.artifact)

hypernym	:	constraint, restraint,
definition	:	a device that retards something's motion (noun.artifact)

part meronym	:	disc brake, disk brake,
definition	:	hydraulic brake in which friction is applied to both sides of a spinning disk by the brake pads (noun.artifact)