Definitions of thaw:

• noun:   a relaxation or slackening of tensions or reserve; becoming less hostile

  Example: "The thaw between the United States and Russia has led to increased cooperation in world affairs"

• noun:   warm weather following a freeze; snow and ice melt

  Example: "They welcomed the spring thaw"

• noun:   the process whereby heat changes something from a solid to a liquid

  Example: "The thawing of a frozen turkey takes several hours"

• verb:   become or cause to become soft or liquid

  Example: "The ice thawed"