Shut, n. The act or time of shutting; close; as, the shut of a door.
Just then returned at shut of evening flowers. --Milton.
2. A door or cover; a shutter. [Obs.]
3. The line or place where two pieces of metal are united by welding.
Cold shut, the imperfection in a casting caused by the flowing of liquid metal upon partially chilled metal; also, the imperfect weld in a forging caused by the inadequate heat of one surface under working.
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