Thaw
Part of speech: noun
Definition: The melting of ice, snow, or other congealed matter; the resolution of ice, or the like, into the state of a fluid; liquefaction by heat of anything congealed by frost a warmth of weather sufficient to melt that which is congealed. —w:Dryden.
Part of speech: verb
Definition: To melt, dissolve, or become fluid; to soften; — said of that which is frozen; as, the ice thaws. Specifically by gradual warming To become so warm as to melt ice and snow; — said in reference to the weather, and used impersonally. To grow gentle or genial. To cause frozen things (such as earth, snow, ice) to melt, soften, or dissolve. Specifically by gradual warming.
Thawing
Part of speech: verb
Definition: To gradually melt, dissolve, or become fluid; to soften from frozen