pencil eraser

English Thesaurus

1. an eraser made of rubber (or of a synthetic material with properties similar to rubber); commonly mounted at one end of a pencil (noun.artifact)

hypernym	:	eraser,
definition	:	an implement used to erase something (noun.artifact)

part meronym	:	pencil,
definition	:	a thin cylindrical pointed writing implement; a rod of marking substance encased in wood (noun.artifact)