sea cucumber

American  

noun

1. any echinoderm of the class Holothuroidea, having a long, leathery body with tentacles around the anterior end.

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sea cucumber British  

noun

1. any echinoderm of the class Holothuroidea, having an elongated body covered with a leathery skin and bearing a cluster of tentacles at the oral end. They usually creep on the sea bed or burrow in sand

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sea cucumber Scientific  

1. See holothurian

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Etymology

Origin of sea cucumber

First recorded in 1595–1605

Example Sentences

See Examples For:

sea cucumber

There's a bone-white lobster, suctioned up for examination at the surface, and a horned sea cucumber whose mast-like spikes collapse into black spaghetti when it arrives on the ship.

From Barron's ● Jan. 26, 2026

Some ingredients commonly found in Chinese fine dining include qi-boosting gelatinous fish maw, collagen-rich bird’s nest and nutrient-dense sea cucumber.

From The Wall Street Journal ● Oct. 18, 2025

She also posted another video where she appeared to be at a buffet with her teammate Hailey Baptiste, with the two making fun of a sea cucumber dish.

From BBC ● Sep. 17, 2025

From 2015 to 2020, the Sri Lankan Navy and the Indian Coast Guard made over 500 arrests associated with $2.84 million in sea cucumber thefts.

From Seattle Times ● Sep. 1, 2023

My attention span and my motivation rank up there with that of a sea cucumber.

From "Challenger Deep" by Neal Shusterman