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sun

noun [S or U]
 
 
/sʌn/

Definition

A1 the star that the Earth moves around, which provides light and heat for the Earth, or the light or heat that the Earth receives from this star: The sun rises in the east and sets in the west. The sun's rays are at their most powerful at midday. I think I've had a bit too much sun today - I've got a headache. Shall we go and sit out in the sun? We thought we'd go out for a walk while the sun was shining.LightStars and constellations
(Definition of sun noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

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