beacon

a fire (usually on a hill or tower) that can be seen from a distance

a radio station that broadcasts a directional signal for navigational purposes

a tower with a light that gives warning of shoals to passing ships

A signal fire to notify of the approach of an enemy, or to give any notice, commonly of warning.

shine like a beacon

guide with a beacon

To give light to, as a beacon; to light up; to illumine.