Acorn
name, noun, slang ·Moderate ·High school level
Definitions
- 1 The fruit of the oak, being an oval nut growing in a woody cup or cupule.
- 2 fruit of the oak tree: a smooth thin-walled nut in a woody cup-shaped base wordnet
- 3 A cone-shaped piece of wood on the point of the spindle above the vane, on the mast-head.
- 4 See acorn-shell.
- 5 The glans penis. informal
"The Romans, likewise, represented the uncouth Priapus—the god of rustic fertility and sexual assault—as comically well endowed, with his acorn showing."
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- 6 A testicle. plural-normally, slang
- 1 Acronym of Association of Community Organizations for Reform Now. US, abbreviation, acronym, alt-of
Example
More examples"And so the two little rabbits lived together happily in the big forest; eating dandelions, playing Jump The Daisies, Run Through The Clover and Find The Acorn all day long."
Etymology
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, from Proto-Indo-European *h₂égrō (“berry”). Cognate with Scots aicorn, Saterland Frisian Äkkene, Dutch aker (“acorn”), German Ecker (“acorn”), Danish agern (“acorn”), Faroese, Icelandic akarn (“acorn”), Norwegian Nynorsk åkorn (“acorn”), Tocharian B oko (“fruit”), Welsh eirin (“plums”), Breton irin (“plum”), Irish airne (“sloe”), Lithuanian úoga, Russian я́года (jágoda, “berry”), etc. Not related to Old English āc (“oak”), corn (“corn, seed”) or Middle English acquerne.
Related phrases
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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.