Today's AU - Wellington Horse Racing Picks

Apprentice

A new jockey who has not ridden a certain number of winners in a specified time period.

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.