tube foot

Noun
  1. Tentacular tubular process of most echinoderms (starfish and sea urchins and holothurians) having a sucker at the end and used for e.g. locomotion and respiration (synset 102325039)
    is a type of: foot, invertebrate foot - any of various organs of locomotion or attachment in invertebrates
    is a part of: echinoderm - marine invertebrates with tube feet and five-part radially symmetrical bodies

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