The term 'Winter Warming' can be summarized by the crossword solution 'THAW, ' which is a four-letter word. Thawing is a process that occurs when ice and snow melt due to an increase in temperature. This process is often associated with the end of winter, as warmer temperatures cause the snow and ice to melt away. In this context, 'Winter Warming' refers to the gradual increase in temperature that leads to the thawing of snow and ice.