(1) A large hemispherical brass or copper percussion instrument with a drumhead that can be tuned by adjusting the tension on it
(2) The membrane in the ear that vibrates to sound
(3) The main cavity of the ear; between the eardrum and the inner ear
- A triangular space between the sides of a pediment.
- The middle ear.
- The eardrum.
- A hearing organ in frogs, toads and some insects.