Membrane of the Middle Ear
This page is the CodyCross answer for the clue below from Singapore, Group 2030, Puzzle 2 (Protected Wetlands).
Question is: Membrane of the Middle Ear
and the answer is: EARDRUM
Word Meaning:
EARDRUM — (anatomy) A thin membrane that separates the outer ear from the middle ear and transmits sound from the air to the malleus.
Definitions from Wiktionary.