No, the winter solstice marks the beginning of winter.

The Winter Solstice is actually the shortest day of the year.

summer solstice and winter solstice

That depends on whether you are in the Northern or Southern Hemisphere. If you are in the Northern, then your winter solstice is the summer solstice in the Southern Hemisphere. If you are in the Southern, then your winter solstice is the summer solstice for everyone in the Northern Hemisphere.

The 2014 Winter Solstice occurred on December 21.