Definition of cold shut
1 : the freezing of the surface of liquid metal during the pouring of an ingot or casting due to interrupted or improper pouring; also : an imperfection thus caused
2 : the imperfect weld caused in a forging by the inadequate heat of one surface under working or by an oxide film
3 : a split ring or link used to mend or fasten chains
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Origin and Etymology of cold shut
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