D
- Daily double: Type of wager calling for the selection of winners of two nominated races.
- Dam: The mother of a horse.
- Daylight: Often called as second place getter in a race where the winner has won by a wide margin.
- Dead cert: Dead certainty, a horse or team that is considered highly likely to win.
- Dead heat: is a tie between two or, rarely, more horses for a win or place in a race.
- Dead ‘un: A horse deliberately ridden to lose.
- Deductions: The percentage reduction in odds, for win and place bets, when a horse is scratched from a race after betting on that race has commenced.
- Derby: A stakes event for three-year-olds.
- Desperate: A hopeless gambler; one who has no control over his or her tendency to bet.
- Dip: A pickpocket on a racecourse; someone with light fingers.
- Dishlickers: A colloquial term for greyhound racing.
- Dogs are barking it: A big tip which has become common knowledge.
- Doing plenty: Having a rough trot on the punt.
- Donkey-licked: To be defeated convincingly.
- Double carpet: 33/1 outsider.
- Drift: When the odds of a horse increase or ease.
- Drift in: A horse moving from a straight path towards the rail during a race.
- Drongo: A horse or person who was disappointing, slow or clumsy.
- Drum: Good information, a tip. Drum can also mean to be placed 2nd or 3rd in a race; to run "the drum."
- Dutch book : To bet on a number of horses, at varying odds, such that whichever bet wins, a set profit is guaranteed.
- Duet: Exotic bet to select two of the three placegetters in a race.
- Duffer in the wet: Does not run well on slow or heavy tracks.
Read more about this topic: Glossary Of Australian And New Zealand Punting