Today's SE - Amal Horse Racing Picks

Minus Pool

A pari-mutuel pool – typically a show pool - where one horse is so heavily bet that after deductions there is not enough money left to cover the prescribed minimum on each bet.

Bute

Shortened word for phenylbutazone, the common non-steroidal medication legal at most racetrack.

Maiden Race

A race exclusively for horses who have not previously won.