sea chestnut

noun

A sea urchin.

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Meanings

nounsea chestnut (plural sea chestnuts)

plural sea chestnuts · alternative sea-chestnut

  1. A sea urchin.

Synonyms & antonyms

Also see
sea urchin

Origin

From sea + chestnut.

Full word history & related roots →
Cite this entry
APA

sea chestnut. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/sea%20chestnut

MLA

“sea chestnut.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/sea%20chestnut. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “sea chestnut,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/sea%20chestnut.

Source: sea chestnut on Wiktionary, CC BY-SA 4.0.