1. Botany. a.
a cup-shaped whorl of hardened, cohering bracts, as in the acorn. See illus. under acorn
a cup-shaped outgrowth of the thallus of certain liverworts.
the apothecium of a cup fungus.
Zoology. a small cup-shaped sucker or similar organ or part.
< Neo-Latin cūpula, Late Latin:
small tub; see cupola