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tube foot

one of numerous small, tubular processes on the ventral body surface of most echinoderms, used for locomotion and grasping.
Origin of tube foot
1885-90 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for tube-foot

tube foot

any of numerous tubular outgrowths of the body wall of most echinoderms that are used as organs of locomotion and respiration and to aid ingestion of food
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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tube-foot in Science
tube foot  
One of the numerous external, fluid-filled muscular tubes of echinoderms, such as the starfish or sea urchin, used for locomotion, respiration, and grasping food or prey.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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