wintertime - the coldest season of the year; in the northern hemisphere it extends from the winter solstice to the vernal equinoxJan, January - the first month of the year; begins 10 days after the winter solstice Feb, February - the month following January and preceding March time of year, season - one of the natural periods into which the year is divided by the equinoxes and solstices or atmospheric conditions; "the regular sequence of the seasons" |