Answer:

outrider

Answer	Crossword Clue
OUTRIDER	Escort for a vehicle
OUTRIDER	Racetrack attendant
OUTRIDER	Mounted stagecoach guard.

OUTRIDER	Attendant on horseback.
OUTRIDER	Vanguard member

Crossword

a puzzle consisting of a grid of squares and blanks into which words crossing vertically and horizontally are written according to clues.