Light bulb
/ˈlaɪtˌbʌlb/ noun
noun ·Rare ·Advanced level
Definitions
Noun
- 1 An evacuated glass bulb containing a metal filament which is heated by electrical resistance to produce light.
- 2 electric lamp consisting of a transparent or translucent glass housing containing a wire filament (usually tungsten) that emits light when heated by electricity wordnet
- 3 An article that resembles such a bulb and converts electricity to light by any process. broadly
"a fluorescent light bulb"
- 4 Used in reference to the sudden arrival of a realization, an inspiration, an idea, or the like. figuratively
"a light-bulb moment"
Example
More examples"Figuratively speaking, a light-bulb flashed over Galvin's head early this year, and in March–along […]"
Etymology
From light + bulb First attested in 1885.