Show Wager
Betting on a horse to finish in the first three spots, which pays out the same whether they win or run second or third.
Workout
A workout is a timed sprint over varying distances prior to a race, meant to get a horse fit enough for competition.
Fractions
The times recorded during the race; with timing starting just past the gate or when the gates open, then parroted for the quarter, half, three-quarters etc. Used as an indication of ability and speed.