Thesaurus

(n) : a cover of minute ice crystals on objects that are exposed to the air. Some of these are tree branches, plant stems, leaves, wires, poles, vehicles, rooftops, or aircraft skin. Frost is the same process by which dew is formed except that the temperature of the frosted object is below freezing. Frost can be light or heavy; the cold weather that would cause frost as in (1) to form

(v) : to get covered with frost; to coat something (eg a cake) with white icing to resemble frost