frostburn noun2 •Damage to a plant due to frost which results is leaves looking burnt.Freezing temperatures the last week of January, throughout much of the southeastern and Dade County areas, resulted in considerable frostburn but only a minimal amount of lost acreage. — 1986 •Synonym of frostbite.Yet another hazard of LPG, particularly of propane, is that of frostburn, should the liquid come into contact with the skin. — 1985 formsfrostburns
