intransitive verb

1. 1. to become liquid or semiliquid; melt: said of ice, snow, etc.
   2. to pass to an unfrozen state: said of frozen foods
   3. to have its contents melt underground water pipes thaw in the spring
2. to rise in temperature above the freezing point, so that snow, etc. melts: said of weather conditions, with impersonal it[it will thaw tomorrow]
3. 1. to get rid of the chill, stiffness, etc. resulting from extreme cold: often with out
   2. to lose coldness or reserve of manner

Etymology: ME thawen < OE thawian, akin to Du dooien, Ger (ver)dauen, to digest < IE base *tā-, to melt, dissolve, flow > L tabere, to melt, vanish

transitive verb

noun

1. the act of thawing
2. a spell of weather warm enough to allow thawing
3. a becoming less reserved in manner