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tube foot

noun

Definition of tube foot

: one of the small flexible tubular processes of most echinoderms that are extensions of the water-vascular system and are used especially in locomotion and grasping

Examples of tube foot in a Sentence

Recent Examples on the Web

 Some use tiny tube feet to crawl, while others, like Synapta, move in undulating, wavelike motions. — Shaena Montanari, National Geographic, "Watch: Divers Stumble Across a Super-Long Sea Cucumber," 21 July 2017

First Known Use of tube foot

1888, in the meaning defined above

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