A breath of winter, frosty and whispering.

Meaning: This means that the breath is cold and icy, like the weather in winter, and it's also whispering quietly. It's like saying, The breath is so cold and icy, it's like a whispering voice from the winter season.

Choice of Words: Breath is the air that you breathe out of your mouth or nose. Winter is the coldest season of the year, when the weather is cold and there is often snow and ice. Frosty means very cold and covered with frost, which is a thin layer of ice crystals that forms on surfaces when the air is cold and humid. Whispering means to speak very quietly, often in a secret way.