light noun definition in Energy and physical forces topic from the Oxford Advanced Learner's Dictionary

light

 noun: Energy and physical forces topic
[uncountable] the energy from the sun, a lamp, etc. that makes it possible to see things bright/dim light a room with good natural light in the fading light of a summer’s evening The light was beginning to fail (= it was beginning to get dark). She could just see by the light of the candle. Bring it into the light so I can see it. a beam/ray of light The knife gleamed as it caught the light (= as the light shone on it).

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