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light bulb /'laitbʌlb/

Anh-Việt Anh-Anh

bóng đèn điện
noun

plural ~ bulbs

[count] :a glass bulb or tube that produces light when it is supplied with electricity

change a light bulb that has burned out - called also bulb

a light bulb goes off/on

chiefly US informal

When a light bulb goes off/on (in your head), you suddenly understand something or have a great idea.

After thinking about the problem for several days, a light bulb went off in her head, and she knew how to solve it.