Breadcrumb Home > Thesaurus > W Synonyms of water vascular system Find synonyms for: Noun1. water vascular system, vascular systemusage: system of fluid-filled tubes used by echinoderms in locomotion and feeding and respirationWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. ✖ Related Content Daily Word Quiz: legerdemain Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language