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"
warm weather following a freeze; snow and ice melt; "they welcomed the spring thaw"
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"
harshly uninviting or formidable in manner or appearance; "a dour, self-sacrificing life"; "a forbidding scowl"; "a grim man loving duty more than humanity"; "undoubtedly the grimmest part of him was his iron claw"- J.M.Barrie