Tack
The equipment the horse wears, including saddle and bridle. A jockey typically has their own racing saddle, placed on each horse they ride just before the race.
Workout
A workout is a timed sprint over varying distances prior to a race, meant to get a horse fit enough for competition.
Bolt
A sudden veering to the inside or outside rail, often caused by the horse spooking or shying from something.

