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Light bulb
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a rounded glass that is inside an electric lamp and from which light shines
light bulb
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Example
He replaced the burnt-out light bulb in the ceiling fixture with a new one.
They installed smart light bulbs that could be controlled remotely via a smartphone app.
He accidentally broke the light bulb while changing it and had to sweep up the shards carefully.
She unscrewed the light bulb from the lamp and shook it gently to check for damage.
The energy-efficient LED light bulbs lasted much longer than traditional incandescent ones.
