Search Result for "earplug": 
Wordnet 3.0

NOUN (2)

1. an earphone that is inserted into the ear canal;

2. a plug of cotton, wax, or rubber that is fitted into the ear canal for protection against the entry of water or loud noise;


WordNet (r) 3.0 (2006):

earplug n 1: an earphone that is inserted into the ear canal 2: a plug of cotton, wax, or rubber that is fitted into the ear canal for protection against the entry of water or loud noise