IPA: /ˈθɜːrəʊˌbreɪs/
KK: /ˈθɜroʊˌbreɪs/
A leather strap that helps support the body of a carriage, often connected to springs or acting as a spring itself.
The thoroughbrace was essential for the stability of the carriage during the journey.
This word originates from Old English, where 'thorough' (meaning completely or entirely) and 'brace' (meaning a pair or support) combine to suggest a complete or thorough support.
Think of something that provides 'complete' support — 'thorough' means entirely, and 'brace' refers to a support or pair.