Breadcrumb Home > Thesaurus > J Synonyms of jackscrew Find synonyms for: Noun 1. jackscrew, screw jack, jack usage: screw-operated jack WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of jackscrew (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: geoduck Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language