backstretch /ˈbækstɹɛt͡ʃ/noun 5verb 1forms 3 noun5 •An area next to a racetrack used to stable the racehorses and house employees. •Synonym of back straight (“straight part of a racetrack, running track, etc., opposite the finishing line”). •(figurative) The middle part of an event. •An exercise that stretches the muscles of the back.I went over to the other bed and lay down. My knees were hanging over the side of the bed, providing me with a fairly decent back stretch. With my eyes closed, I could hear sleep calling. — 2014 •The laying of a supply line from the region of the fire backwards toward the water source. verb1 •To lay a supply line from the region of the fire backwards toward the water source. formsbackstretched · backstretching · backstretches