lantern

noun

• 1a lamp with a transparent case protecting the flame or electric bulb, and typically having a handle by which it may be carried or hung:a paper lantern

• 2a square, curved, or polygonal structure on the top of a dome or a room, with the sides glazed or open so as to admit light: the building is well lit by the ring of windows in the octagonal lantern
• the light chamber at the top of a lighthouse.