Noun
1. the process whereby heat changes something from a solid to a liquid;
"the power failure caused a refrigerator melt that was a disaster""the thawing of a frozen turkey takes several hours"2. warm weather following a freeze; snow and ice melt;
"they welcomed the spring thaw"3. a relaxation or slackening of tensions or reserve; becoming less hostile;
"the thaw between the United States and Russia has led to increased cooperation in world affairs"