Meaning

noun fruit of the oak tree: a smooth thin-walled nut in a woody cup-shaped base

originEtymology tree Proto-Indo-European *h₂ógr̥der.? Proto-Germanic *akraną Proto-West Germanic *akarn Old English æcern Middle English corninflu. Middle English acorn English acorn Inherited from Middle English acorn, an alteration (after corn) of earlier *akern, from Old English æcern (“acorn, oak-mast”), from Proto-West Germanic *akarn, from Proto-Germanic *akraną (“fruit; acorn, nut”), from…

Etymology from Wiktionary, CC BY-SA 3.0