dead track
Racing surface lacking resiliency.
deep stretch
A position very close to the finish line in race.
dogs
Rubber traffic cones (or a wooden barrier) placed at certain distances out from the inner rail, when the track is wet, muddy, soft, yielding or heavy, to prevent horses during the workout period from churning the footing along the rail. Used in the phrase, “The dogs are up,” or simply, “dogs up.”