Definition of thaws:
(v) :
(intransitive) To gradually melt, dissolve, or become fluid; to soften from frozen.
(v) :
(impersonal, intransitive) To become sufficiently warm to melt ice and snow, said in reference to the weather.
(v) :
(transitive) To gradually cause frozen things (such as earth, snow, ice) to melt, soften, or dissolve.
(n) :
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
(n) :
a period of weather warm enough to melt that which is frozen
(v) :
(intransitive, figuratively) To grow gentle or genial.