From Longman Dictionary of Contemporary EnglishRelated topics: Recording, Telephone, telegraphearpieceear‧piece /ˈɪəpiːs $ ˈɪr-/ noun [countable]1TCRa small piece of equipment that you put into your ear to hear a recording, message etc2[usually plural]MH one of the two pieces at the side of a pair of glasses that go round your ears3TCTthe part of a telephone that you listen throughExamples from the Corpusearpiece• The nurse listened with an earpiece.• One interesting point is that signals for both directionspass through both microphones and both earpieces.• At two minutespast six Holloway pressed his earpiece.• A thincordleads to Sam's earpiece.• Lift the telephone and hold the microphone next to the telephone earpiece.• Her hand tightened convulsively on the receiver, the earpiecejerked against her face.