A light bulb is a device that produces light from electricity when turned on. Light bulbs are often used to bring light to a space or to indicate when an electronic device is on.

In many works of fiction, a light bulb is sometimes used to indicate that a character just thought up a bright idea.

See also

• marquee lights
• palm-fist tap
• spoken light bulb
• string of light bulbs

The following tags are aliased to this tag: lightbulb (learn more).

The following tags implicate this tag: spoken_light_bulb (learn more).

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