a glass or transparent container, usually rounded, with something inside that produces light when an electric current passes through it, such as an electric filament (= a thin thread of metal) or an LED (= an electronic device)
A light bulb identical to those over the flight section was positioned above each trap over the translucent ceiling.
Thomas Edison is credited with inventing the first practical light bulb.
Energy-efficient LED light bulbs are becoming more popular.
Changing a burnt-out light bulb is a simple household task.
The invention of the incandescent light bulb revolutionized indoor lighting.
