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.
Dead Heat
Two or more horses finishing so close at the wire, that they were unable to be separated on a photo finish and deemed to have tied.