nap
A tipster's best, or strongest, bet of the day.
National Hunt
The dominant winter racing format in the UK. National Hunt races are generally contested by mares and geldings, and are run over distances of 2 miles or more. Most National Hunt races require contestants to jump obstacles on the course.
nb
A tipster's second-best bet of the day.
neck
A measurement of the distance by which a horse is beaten, roughly equivalent to the length of a horse's neck.
no action
A bet for which no money is won or lost.
non-runner
In a horse race, a horse that was entered in a race but doesn't actually run it.
non-runner no bet
Abbreviated as NRNB, a type of insurance offered on antepost bets in which bookmakers agree to refund your stake if the horse you back fails to run.
normal time
In football, the length of a match, excluding extra time and penalties. This is 90 minutes plus injury time.
novelty bet
A novelty bet is a bet on an outcome that's not sport-related, such as the winner of a presidential election or the gender of a baby about to be born to royalty.
NRNB
number spread
Similar to point spread, an index spread based on the number of runs, goals and points scored in an event.