Breadcrumb Home > Thesaurus > S Synonyms of swallowtail Find synonyms for: Noun 1. swallow-tailed coat, swallowtail, morning coat, jacket usage: a man's full-dress jacket with two long tapering tails at the back WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of swallowtail (Dictionary) TrendingHere are the facts and trivia that people are buzzing about. Hanukkah Origins of the Christmas Holiday Jewish Holidays, 2010-2030 (A.M. 5770-5791) Western Christian Holidays, 2010-2030 Krampus: The Christmas Devil Kwanzaa ✖ Related Content Daily Word Quiz: genome Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language