exactanoun [ C ]
uk/ɪɡˈzæk.tə//ɪɡˈzæk.tə/USa bet (= an amount of money that you risk on the result of something, such as a horse race) in which the horses, etc. that come first and second must be picked in the right order:
I just won an exacta on the first race.
Synonym
perfecta
Compare
trifecta