Nouns

(n)middle ear, tympanic cavity, tympanumthe main cavity of the ear; between the eardrum and the inner ear
(n)eardrum, tympanum, tympanic membrane, myringathe membrane in the ear that vibrates to sound
(n)kettle, kettledrum, tympanum, tympani, timpania large hemispherical brass or copper percussion instrument with a drumhead that can be tuned by adjusting the tension on it