Tymbal (or timbal) is a term for a corrugated exoskeletal structure used to produce sounds in insects. In male cicadas, the tymbals are membranes in the abdomen, responsible for the characteristic sound produced by the insect. In tiger moths, the tymbals are modified regions of the thorax, and produce high-frequency clicks. The paired tymbals of a...
• (n.) A kind of kettledrum.
The sound-producing 'drum-skin' of a cicada.
a cicada's sound producing organ.