Source : WordNet®

unthaw
     v : become or cause to become soft or liquid; "The sun melted
         the ice"; "the ice thawed"; "the ice cream melted"; "The
         heat melted the wax"; "The giant iceberg dissolved over
         the years during the global warming phase"; "dethaw the
         meat" [syn: {dissolve}, {thaw}, {unfreeze}, {dethaw}, {melt}]