water vascular system

English Thesaurus

1. system of fluid-filled tubes used by echinoderms in locomotion and feeding and respiration (noun.animal)

hypernym	:	vascular system,
definition	:	the vessels and tissue that carry or circulate fluids such as blood or lymph or sap through the body of an animal or plant (noun.body)

part meronym	:	echinoderm,
definition	:	marine invertebrates with tube feet and five-part radially symmetrical bodies (noun.animal)