a transparent or translucent, usually portable, case for enclosing a light and protecting it from the wind, rain, etc.

the chamber at the top of a lighthouse, surrounding the light.

magic lantern.

Architecture .

a tall, more or less open construction admitting light to an enclosed area below.

any light, decorative structure of relatively small size crowning a roof, dome, etc.

an open-sided structure on a roof to let out smoke or to assist ventilation.

a light, usually over the entrance to an elevator on each floor of a multistory building, that signals the approach of the elevator.

noun

beacon , flashlight , gas lamp , gaslight , hurricane lamp , kerosene lamp , light , searchlight , torch