light bulb
A 'light bulb' is an essential device in modern lighting technology, converting electrical energy into visible light, and has various applications from household lighting to specialized industrial uses.
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Definition
A2General Use
(common)A device that produces light when electrical energy passes through a filament or gas inside a sealed glass or plastic container.
Example
- She replaced the light bulb in the living room lamp.
- The light bulb burned out and needs to be changed.
B2Figurative
(idiomatic)A sudden moment of realization or understanding.
Example
- When she saw the data, she had a light bulb moment and understood the problem.
- His light bulb went off when he figured out the solution.
B1Safety
(technical)A source of light that can pose risks such as electric shock, burns, or glass breakage if handled improperly.
Example
- Be careful when changing a light bulb to avoid electric shock.
- Incandescent bulbs can get very hot and cause burns.
Similar
Terms that have similar or relatively close meanings to "light bulb":
light globeelectric lightneon lighttop lightlight offchamber lampplasma lampbrake lightyellow lightdummy lightlight up