/ Thesaurus / C Synonyms of costoaxillary vein Find synonyms for: Noun1. costoaxillary vein, vein, vena, venous blood vesselusage: one of several veins connecting intercostal veins with the lateral thoracic vein or the thoracoepigastric veinWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: falsetto Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language