What is the meaning of Thaw?

To gradually melt, dissolve, or become fluid; to soften from frozen

To become sufficiently warm to melt ice and snow — said in reference to the weather, and used impersonally.

To grow gentle or genial.

To gradually cause frozen things (such as earth, snow, ice) to melt, soften, or dissolve.

The melting of ice, snow, or other frozen or congealed matter; the transformation of ice or the like into the state of a fluid; liquefaction by heat of anything congealed by frost

a period of weather warm enough to melt that which is frozen

A period of relaxation, of reduced reserve, tension, or hostility or of increased friendliness or understanding.

Aspirate mutation of taw.

Source: wiktionary.org