n.
Pronunciation: v ə - ' l ō -n ē - ə , -ny ə
Function: noun
Etymology: Italian vallonia, from Middle Greek balanidia, plural of balanidion, diminutive of Greek balanos acorn ― more at GLAND
Date: 1722
: dried acorn cups especially from a Eurasian evergreen oak ( Quercus macrolepis syn. Q. aegilops ) used in tanning or dressing leather