As a proper noun catt
is .
As a noun eardrum is
a thin membrane that separates the outer ear from the middle ear and transmits sound from the air to the malleus.
eardrum
English
Alternative forms
* ear drum
Noun
(
en noun)
A thin membrane that separates the outer ear from the middle ear and transmits sound from the air to the malleus.
Synonyms
* membrana tympanica
* tympanic membrane