light bulb

English dictionary entry

Meanings

noun

An evacuated glass bulb containing a metal filament which is heated by electrical resistance to produce light.
An article that resembles such a bulb and converts electricity to light by any process.
Used in reference to the sudden arrival of a realization, an inspiration, an idea, or the like.

/ˈlaɪtˌbʌlb/ LL-Q1860 (eng)-Vininn126-light bulb.wav

light bulb light bulbs light-bulb lightbulb

From light + bulb First attested in 1885.

bulb glow-lamp incandescent lamp light globe

light-bulbed light bulb joke light-bulb moment

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