Breadcrumb Home > Thesaurus > O Synonyms of onager Find synonyms for: Noun 1. catapult, arbalest, arbalist, ballista, bricole, mangonel, onager, trebuchet, trebucket, engine usage: an engine that provided medieval artillery used during sieges; a heavy war engine for hurling large stones and other missiles 2. onager, Equus hemionus, wild ass usage: Asiatic wild ass WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of onager (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: tintinnabulation Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language