tympanum

Noun

• a large hemispherical brass or copper percussion instrument with a drumhead that can be tuned by adjusting the tension on it

• the membrane in the ear that vibrates to sound

• the main cavity of the ear; between the eardrum and the inner ear

Related words

• Synonyms: 
  kettle , kettledrum , tympani , timpani , eardrum , tympanic membrane , myringa , middle ear , tympanic cavity