vacuole

English Thesaurus

1. a tiny cavity filled with fluid in the cytoplasm of a cell (noun.body)

hypernym	:	bodily cavity, cavity, cavum,
definition	:	(anatomy) a natural hollow or sinus within the body (noun.body)

part meronym	:	cell,
definition	:	(biology) the basic structural and functional unit of all organisms; they may exist as independent units of life (as in monads) or may form colonies or tissues as in higher plants and animals (noun.tops)