lamp

1 a :  any of various devices for producing light or sometimes heat: as (1) :  a vessel with a wick for burning an inflammable liquid (as oil) to produce light (2) :  a glass bulb or tube that emits light produced by electricity (as an incandescent lightbulb or fluorescent lamp) b :  a decorative appliance housing a lamp that is usually covered by a shade

2 :  a celestial body

3 :  a source of intellectual or spiritual illumination

4 :  eye 1a —usually used in plural