Skip to definition.
Get the FREE one-click dictionary software for Windows or the iPhone/iPad and Android apps

Noun: lightbulb  'lIt,búlb
  1. Electric lamp consisting of a transparent or translucent glass housing containing a wire filament (usually tungsten) that emits light when heated by electricity
    - light bulb, bulb, incandescent lamp, electric light, electric-light bulb, light globe [Austral, NZ]

Derived forms: light bulbs, lightbulbs

Type of: electric lamp

Encyclopedia: Lightbulb