Winter

Winter was a season.

The severity of the winter of 1963 was caused by the Cold. (PROSE: Time and Relative)

Before meeting the First Doctor, the Tribe of Gum lost their last firemaker. They were unable to cook their food and were freezing during the winter because of this. (TV: An Unearthly Child)

River Song was taken by the Doctor for her birthday to the last Winter Frost fair on the River Thames in 1814. Stevie Wonder unknowingly performed before being taken back to his original time. (TV: A Good Man Goes to War)