accumulator

mastery
/əˈkjum.jəˌleɪ.tɚ/noun

card 1 of 8 · context meaning

Which meaning of 'accumulator' best matches the usage in the sentence?

The largest payout for a bet on a horse race was $1,627,084 after tax, paid to Britons Anthony Speelman and Nicholas Cowan on their $64 nine-horse accumulator at Santa Anita Racecourse, California, in 1987.