the world > plants > part of plant > part defined by form or function > [noun] > compartment or cavity (3)
Zoology, Anatomy, and Botany. A small cavity or chamber within a structure, often one of several which may be separated from each other by septa, esp.…
A space or chamber partitioned off. in the body of an animal or plant.
Botany. On the surface of the receptacle of a composite flower: a shallow, walled compartment resembling a cell of a honeycomb, containing an…