Definition of overcup in US English:

overcup

noun

  • More fully "overcup oak". Either of two North American oaks in which the acorn is almost completely enclosed by the cup or its scales: (a) the mossy-cup oak, Quercus macrocarpa (also "overcup white oak"); (b) the swamp white oak, Q. lyrata, of the southern U.S.

Origin

Early 19th century; earliest use found in Frederick Pursh (1774–1820). From over- + cup.

Pronunciation

overcup

/ˈəʊvəkʌp/