Breadcrumb Home > Thesaurus > F Synonyms of flask Find synonyms for: Noun 1. flask, bottle usage: bottle that has a narrow neck 2. flask, flaskful, containerful usage: the quantity a flask will hold WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of flask (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: inmediasres Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language