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The Collaborative International Dictionary
sea cucumbers

Holothurian \Hol`o*thu"ri*an\, a. (Zo["o]l.) Belonging to the Holothurioidea. -- n. One of the Holothurioidea.

Note: Some of the species of Holothurians are called sea cucumbers, sea slugs, trepang, and b[^e]che de m[`e]r. Many are used as food, esp. by the Chinese. See Trepang.

Wiktionary
sea cucumbers

n. (sea cucumber English)