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A hollow water-cooled iron casting in the upper part of the archway in which the dam stands.

A panel; a tympanum.

Tympanic.

Like a tympanum or drum; acting like a drumhead; as, a tympanic membrane.

One who beats a drum. [R.]

A flatulent distention of the belly; tympany.

Of, pertaining to, or affected with, tympanites.

Inflammation of the lining membrane of the middle ear.

of a drum; to make into a drum or drumhead, or cause to act or sound like a drum. [Obs.] "Tympanized, as other saints of God were." Oley.

A kettledrum; -- chiefly used in the plural to denote the kettledrums of an orchestra. See Kettledrum. [Written also timpano.]

A combining form used in anatomy to indicate connection with, or relation to, the tympanum; as in tympanohyal, tympano-Eustachian.

Of or pertaining to the tympanum and the hyoidean arch. -- n.

The ear drum, or middle ear. Sometimes applied incorrectly to the tympanic membrane. See Ear.

A flatulent distention of the belly; tympanites. Fuller.

Situated behind the tympanum, or in the skull, behind the auditory meatus.

r. Auditory canal (Anat.), the tube from the auditory meatus or opening of the ear to the tympanic membrane.

he cylindrical part of a boiler, containing the flues. -- Barrel of the ear (Anat.), the tympanum, or tympanic cavity. -- Barrel organ, an instrument for producing music by the action of a revolving cylinder. -- Barrel vault. See under Vault.

A piece of rubber, felt, or woolen cloth, used in the tympan to make it soft and elastic.

The state of being braced or tight; tension. The laxness of the tympanum, when it has lost its brace or tension. Holder.

The ovoid prominence below the opening of the ear in the skulls of many animals; as, the tympanic or auditory bulla.