Illumination produced electrically.
The definition of a bulb is an underground bud of a plant, or something resembling its rounded or elongated shape.
A lamp in which the light is produced by a filament of conducting material contained in a vacuum and heated to incandescence by an electric current
Find another word for light-bulb. In this page you can discover 8 synonyms, antonyms, idiomatic expressions, and related words for light-bulb, like: electric light bulb, incandescent bulb, electric light, electric bulb, filament, lightbulb, bulb and incandescent-lamp.