Underlay
A horse that is going off at lower odds than it deserves based on performance.
Bobble/Stumble
A slip or a duck from a horse trying to leave the starting gates, often caused by the surface giving way under the feet. This can range from a mild misstep to a stumble down to their knees.
Bute
Shortened word for phenylbutazone, the common non-steroidal medication legal at most racetrack.

