sea cucumber

Meaning

An echinoderm of the class Holothuroidea, with an elongated body and leathery skin.

Synonyms

beche-de-mer

sea leech

cucumber of the sea

beche de mer

Etymology

From sea + cucumber, named in reference to its appearance. The term first appeared in common use in the 19th century, and is a calque of French concombre de mer according to the Oxford English Dictionary.

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