Definition of Eardrums

Babylon English Dictionary
membrane of the inner ear
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Eardrums Definition from Language, Idioms & Slang Dictionaries & Glossaries
WordNet 2.0

Noun
1. the membrane in the ear that vibrates to sound
(synonym) tympanum, tympanic membrane, myringa
(hypernym) membrane, tissue layer
(hyponym) perforated eardrum
(part-holonym) ear
(part-meronym) umbo