Meaning oflightbulbin English

Noun

1. a glass container with a glowing filament; produces light
2. an object resembling a bulb; converts electricity to light
3. a symbol of sudden realization; inspiration or idea
   The lightbulb moment came when she realized her true passion.
4. a device with a metal filament; heated by electricity
   The new lightbulb uses less energy and lasts longer.