epigastric vein epi·gast·ric·vein uncommon noun 1. veins serving the anterior walls of the abdomen Synonymsepigastric vein Related words Broader terms vein Narrower terms inferior epigastric veinsuperficial epigastric veinsuperior epigastric veins WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.