Correct 咽鼓管 / yāngǔguǎn / Strokes Definition Eustachian tube (linking pharynx 咽 to tympanic cavity 鼓室 of middle ear)/auditory tube Example As a Noun Eustachian tube 咽鼓管 - Chinese Dictionary Definition Eustachian tube (linking pharynx 咽 to tympanic cavity 鼓室 of middle ear)/auditory tube Eustachian tube (linking pharynx 咽 to tympanic cavity 鼓室 of middle ear)/auditory tube