acorn cup

English Thesaurus

1. cup-shaped structure of hardened bracts at the base of an acorn (noun.plant)

hypernym	:	cup,
definition	:	cup-shaped plant organ (noun.plant)

part meronym	:	acorn,
definition	:	fruit of the oak tree: a smooth thin-walled nut in a woody cup-shaped base (noun.plant)

derivation	:	cupular, cupulate,
definition	:	shaped like (or supporting) a cupule (adj.all)

derivation	:	cupular, cupulate,
definition	:	shaped like (or supporting) a cupule (adj.all)