Breadcrumb Home > Thesaurus > G Synonyms of gearbox Find synonyms for: Noun 1. gearbox, gear box, gear case, shell, case, casing usage: the shell (metal casing) in which a train of gears is sealed WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of gearbox (Dictionary) TrendingHere are the facts and trivia that people are buzzing about. Chinese New Year History, Meaning, and Celebrations Current Events This Week: February 2024 Valentine's Day Valentine's Day History Mardi Gras 30 "Charlie and the Chocolate Factory" Quotes ✖ Related Content Daily Word Quiz: turgid Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language