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Definition of overhauler in English:

overhauler

Pronunciation /ˈəʊvəˌhɔːlə/

noun

  • A person who overhauls; a company, etc., in the business of overhauling.

Origin

Mid 19th century; earliest use found in Charles Tomlinson (1808–1897), science teacher and writer. From overhaul + -er.