Answer:

pylon

AnswerCrossword Clue
PYLONAir race marker
PYLONTall supporting tower
PYLONTraffic cone
PYLONAviator's guide
PYLONTraffic guide
PYLONRace marker
PYLONAircraft course marker
PYLONPilot's guidepost
PYLONBridge tower
PYLONAirfield tower
PYLONBridge marker