Eustachian tube
noun/juːˈsteɪʃn tjuːb/
/juːˈsteɪʃn tuːb/
(anatomy)- a narrow tube that joins the throat to the middle earWord Originmid 18th cent.: named after Bartolomeo Eustachio (died 1574), the Italian anatomist who identified and described it.
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Eustachian tube