Noah Webster
Thaw
THAW, verb intransitive
1. To melt, dissolve or become fluid, as ice or snow. [It is remarkable that this word is used only of things that congeal by frost. We never say, to thaw metal of any kind.]
2. To become so warm as to melt ice and snow; used of weather.
THAW, verb transitive To melt; to dissolve; as ice, snow, hail or frozen earth.
THAW, noun The melting of ice or snow; the resolution of ice into the state of a fluid; liquefaction by heat, of any thing congealed by frost.