frostbite verb 2noun 1forms 4 verb2 •To expose to the effect of frost, or a frosty air; to blight or nip with frost. •To engage in winter sailboating. noun1 •An injury suffered as a result of freezing of some part of the body, typically fingers, toes or the nose. formsfrostbit · frostbitten · frostbiting · frostbites