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Old English, "fourth season of the year," from Proto-Germanic *wentruz (cf. Old Frisian, Dutch winter, Old Saxon, Old High German wintar, German winter, Danish and Swedish vinter, Gothic wintrus, Old Norse vetr "winter"), possibly from PIE *wed-/*wod-/*ud- "wet" (see water), or from *wind- "white" (cf. Celtic vindo- "white").
The Anglo-Saxons counted years in "winters," cf. Old English ænetre "one-year-old." Old Norse Vetrardag, first day of winter, was the Saturday that fell between Oct. 10 and 16.
"to pass the winter (in some place)," late 14c., from winter (n.). Related: Wintered; wintering.
coldest season of the year, between autumn and spring; the name comes from an old Germanic word that means "time of water" and refers to the rain and snow of winter in middle and high latitudes. In the Northern Hemisphere, it is commonly regarded as extending from the winter solstice (year's shortest day), December 21 or 22, to the vernal equinox (day and night equal in length), March 20 or 21, and in the Southern Hemisphere, from June 21 or 22 to September 22 or 23. The low temperatures associated with winter occur only in middle and high latitudes; in equatorial regions, temperatures are almost uniformly high throughout the year. For physical causes of the seasons, see season.