earpiece

English Thesaurus

1. electro-acoustic transducer for converting electric signals into sounds; it is held over or inserted into the ear (noun.artifact)

hypernym	:	electro-acoustic transducer,
definition	:	a transducer that converts electrical to acoustic energy or vice versa (noun.artifact)

hyponym	:	earplug,
definition	:	an earphone that is inserted into the ear canal (noun.artifact)

hyponym	:	receiver, telephone receiver,
definition	:	earphone that converts electrical signals into sounds (noun.artifact)