Answer: beacons

AnswerCrossword Clue
BEACONSGuiding lights
BEACONSLighthouses
BEACONSLighthouses.
BEACONSWatchtowers.
BEACONSPharoses
BEACONSGuidance signals
BEACONSSignals
beaconsBEACON, to shine like a light on high
beaconssignal, as a light or fire