Noun tympanum has 3 senses
  1. middle ear, tympanic cavity, tympanum - the main cavity of the ear; between the eardrum and the inner ear
    --1 is a kind of cavity, bodily cavity, cavum
    --1 is a part of auditory apparatus
    --1 has parts:
     ossicle, bonelet, ossiculum; Eustachian tube, auditory tube; malleus, hammer; incus, anvil; stapes, stirrup
  2. eardrum, tympanum, tympanic membrane, myringa - the membrane in the ear that vibrates to sound
    --2 is a kind of membrane, tissue layer
    --2 is a part of ear
    --2 has parts: umbo
    --2 has particulars: perforated eardrum
  3. kettle, kettledrum, tympanum, tympani, timpani - a large hemispherical brass or copper percussion instrument with a drumhead that can be tuned by adjusting the tension on it
    --3 is a kind of percussion instrument, percussive instrument
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