Eustachian tube, n.
either of the paired tubes connecting the middle ears to the nasopharynx; equalizes air pressure on the two sides of the eardrum
<noun.body>
Eustachian tube auditory tube
Word
either of the paired tubes connecting the middle ears to the nasopharynx; equalizes air pressure on the two sides of the eardrum
<noun.body>
Eustachian tube auditory tube