Breadcrumb Home > Thesaurus > F Synonyms of firkin Find synonyms for: Noun 1. firkin, British capacity unit, Imperial capacity unit usage: a British unit of capacity equal to 9 imperial gallons 2. firkin, keg usage: a small wooden keg WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of firkin (Dictionary) TrendingHere are the facts and trivia that people are buzzing about. Who's Who in the "Lord of the Rings" Roman Catholic Church Hierarchy Current Events This Week: March 2023 42 Top Western Movie Quotes Slaves in the Family User's Guide to Environmental Language ✖ Related Content Daily Word Quiz: wastrel Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language