Emily Dickinson Lexicon

THAW, v.i. [Sax. thawan; G. thauen; D. dooyen; Dan. töer; Sw. töa; Gr. τηκω. Class Dg.]

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.