n.
Pronunciation: ' kyü-( ˌ )pyül
Function: noun
Etymology: New Latin cupula, from Late Latin, diminutive of Latin cupa tub ― more at HIVE
Date: 1826
: a cup-shaped anatomical structure: as a : an involucre characteristic of the oak in which the bracts are indurated and coherent b : an outer integument partially enclosing the seed of some seed ferns