acorn

noun \ ˈā-ˌkȯrn , -kərn \
Updated on: 15 Nov 2017

Definition of acorn

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

Recent Examples of acorn from the Web

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Illustration of acorn

Origin and Etymology of acorn

Middle English akorn, akkorn (partially assimilated to corn "kernel, 1corn"), hakerne, accherne, accharne, going back to Old English æcern, going back to Germanic *akrana- (whence also Middle High German ackeran "tree nuts," Old Norse akarn, Gothic akran "fruit, produce"); akin to Old Irish írne "sloe, kernel," Welsh eirin "plums, sloes," aeron "fruits, berries," going back to Celtic *agrinyo-, *agranyo-; perhaps further akin to a Balto-Slavic word with an initial long vowel (Old Church Slavic agoda "fruit," Polish jagoda "berry," Lithuanian úoga
Note: Taken to be a derivative of Indo-European *h2eǵros "uncultivated field, pasture" (see acre), though this would seem to exclude the Balto-Slavic etymon, which lacks the suffix, from consideration. It is also not clear if fields, uncultivated or not, are the source of wild tree nuts.


ACORN Defined for English Language Learners

acorn

noun

Definition of acorn for English Language Learners

  • : the nut of the oak tree


ACORN Defined for Kids

acorn

noun \ ˈā-ˌkȯrn , -kərn \

Definition of acorn for Students

:the nut of the oak tree


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