unknown-track - Race 1

Bute

Shortened word for phenylbutazone, the common non-steroidal medication legal at most racetrack.

Underlay

A horse that is going off at lower odds than it deserves based on performance.

Rabbit

Also known as a pacemaker; this is a horse with no expected chance of winning but is used to prompt a quick pace on the front end of the race to the benefit of a stablemate who is a closer.