Answer: galloper

AnswerCrossword Clue
GALLOPERHorse going full tilt
GALLOPERFast steed.
GALLOPERHorse with a three-beat gait
GALLOPERBritish orderly
GALLOPERPaul Revere, on the run
galloperone that gallops (to ride a horse at full speed)
galloperto run at full speed
galloperthe fastest gait of a horse