/ ˈɪndi; NAmE / (also ˈIndy racing , ˈIndycar /ˈɪndikɑː(r)/ ˈIndy car racing ) noun
[ U ] motor racing around a track which is raised at both sides
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WORD ORIGIN
1950s: named after Indianapolis, Indiana (US) where the principal Indy race is held.
/ ˈɪndi; NAmE / (also ˈIndy racing , ˈIndycar /ˈɪndikɑː(r)/ ˈIndy car racing ) noun
[ U ] motor racing around a track which is raised at both sides
••
WORD ORIGIN
1950s: named after Indianapolis, Indiana (US) where the principal Indy race is held.
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005