Word Study
lightbulb
WORDNET DICTIONARY
Noun lightbulb has 1 sense
- lightbulb(n = noun.artifact) bulb, electric light, electric-light bulb, incandescent lamp, light bulb - electric lamp consisting of a transparent or translucent glass housing containing a wire filament (usually tungsten) that emits light when heated by electricity; Array is a kind of electric lamp
has parts: filament
CIDE DICTIONARY
lightbulb, 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. [WordNet 1.5]
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