Definition of "thaw"
verb:
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To melt, dissolve, or become fluid (specifically by gradual warming); to soften; said of that which is frozen.
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To become so warm as to melt ice and snow; said in reference to the weather, and used impersonally.
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To grow gentle or genial.
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To cause frozen things (such as earth, snow, ice) to melt, soften, or dissolve. Specifically by gradual warming.
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noun:
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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.
from Wiktionary, Creative Commons Attribution/Share-Alike License -
A warmth of weather sufficient to melt that which is congealed.
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