Accumulator (general terms)
A bet in which a single stake is used to generate two or more
bets in succession.
The punter makes a series of selections each from a different
race or event.
Every time a selection wins, the stake plus winnings is put
onto the next selection.
If any selection loses, the whole bet is a loser. (Accumulators
are also known as doubles, trebles, fourfolds, fivefolds, sixfolds,
etc., depending on the number of selections.)
