Cavity

n.	1.	Hollowness. The cavity or hollowness of the place. - Goodwin.
	2.	A hollow place; a hollow; as, the abdominal cavity. An instrument with a small cavity, like a small spoon - Arbuthnot. Abnormal spaces or excavations are frequently formed in the lungs, which are designated cavities or vomicæ. - Quain. Body cavity the cœlum. See under Body.

Noun	1.	cavity - a sizeable hole (usually in the ground); "they dug a pit to bury the body" Synonyms: pit
	2.	cavity - space that is surrounded by something Synonyms: enclosed space
	3.	cavity - soft decayed area in a tooth; progressive decay can lead to the death of a tooth Synonyms: caries, dental caries, tooth decay
	4.	cavity - (anatomy) a natural hollow or sinus within the body Synonyms: bodily cavity, cavum

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