What is (a) A channel or runner which receives the rows of molds in the pig bed. (b) The bar of metal which remains in such a runner. (c) A mass of solidified metal in a furnace hearth; a salamander called?

sow — (Metal.) (a) A channel or runner which receives the rows of molds in the pig bed. (b) The bar of metal which remains in such a runner. (c) A mass of solidified metal in a furnace hearth; a salamander. (Webster's 1913.)

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