U.S. [f. THOROUGH prep. or adv. + BRACE sb.2 11.] Each of a pair of strong braces or bands of leather connecting the front and back C-springs and supporting the body of a coach or other vehicle. Hence Thoroughbraced a., suspended by thoroughbraces.
1837. Ht. Martineau, Soc. Amer., II. 175. Half a mile before reaching the place … the thorough-brace broke, and we had to walk … to the inn.
1858. O. W. Holmes, Deacon’s Masterp., 22. In building of chaises … There is always somewhere a weakest spot,—In hub, tire, felloe, in spring or thill,… In screw, bolt, thoroughbrace.
1884. S. O. Jewett, Country Doctor, 19. The old-fashioned thorough-braced wagon.
