winter

Definitions

(Noun) One of the four seasons. It's usually very cold.

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(Noun) One of four seasons; usually marked by cold temperatures, though just how cold varies throughout the world.

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a season of cold weather

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(Noun) 1. A season in which the northern hemisphere experiences cold weather usually and the southern hemisphere experiences hot weather. Often not mentioned near the equator.
2. Shading of color.

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(Noun) a cold season