Lightbulb

2 definitions found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  lightbulb \lightbulb\, light bulb \light bulb\n.
     A glass bulb with metallic contacts on the outside connected
     to a wire filament (usually tungsten) inside that emits light
     when heated by passage of electricity through the filament;
     -- used as the replaceable light-emitting component of an
     electric lamp, flashlight, lighting fixture, etc.


  
     Syn: light bulb, bulb, incandescent lamp, electric light,
          electric-light bulb.
          [WordNet 1.5 +PJC]

From WordNet (r) 2.0 [wn]:

  lightbulb
       n : electric lamp consisting of a glass bulb containing a wire
           filament (usually tungsten) that emits light when heated
           [syn: {light bulb}, {bulb}, {incandescent lamp}, {electric
           light}, {electric-light bulb}]