verb [ no obj. ]
(of ice, snow, or another frozen substance) become liquid or soft as a result of warming: the river thawed and barges of food began to reach the capital.
• (it thaws, it is thawing, etc.) the weather becomes warmer and melts snow and ice.
• (of a part of the body) become warm enough to stop feeling numb: Tony began to feel his ears and toes thaw out.
• make or become friendlier or more cordial: [ no obj. ] : she thawed out sufficiently to allow a smile to appear.