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Webster 1913 Edition

Noun.

[Gr. [GREEK], fr. [GREEK] a kettledrum. See

(Med.)

A flatulent distention of the belly; tympanites.

Fuller.

Hence, inflation; conceit; bombast; turgidness.

“Thine’s a tympany of sense.”

Dryden.

A plethoric a tautologic

tympany

of sentence.

De Quincey.

Noun.

A flatulent distention of the belly. [See Tympanites.]

tympany ‎(plural tympanies)

The sound made by beating a drum.
(medicine)Tympanites (distention of the abdomen).
Inflation; conceit; bombast; turgidness.

Thine 's a tympany of sense. — Dryden.

(Can we find and add a quotation of De Quincey to this entry?)