Definitions for backstretchˈbækˈstrɛtʃ
Random House Webster's College Dictionary
the straight part of a racetrack opposite the part leading to the finish line.
Origin of backstretch:
the part of a racecourse that is farthest from the grandstand and parallel to the homestretch.
the area adjacent to a racetrack where the horses are stabled and stable employees have temporary living accommodations.