Main Entry:

acorn

Pronunciation:

\ˈā-ˌkȯrn, -kərn\

Function:

noun

Etymology:

Middle English akern, from Old English æcern; akin to Middle High German ackeran acorns collectively, Old Irish áirne sloe, Lithuanian uoga berry

Date:

before 12th century

: the nut of the oak usually seated in or surrounded by a hard woody cupule of indurated bracts

[acorn illustration]