sow(redirected from non-productive sow days)
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1. a female adult pig
2. the female of certain other animals, such as the mink
a. the channels for leading molten metal to the moulds in casting pig iron
b. iron that has solidified in these channels
A mold of larger size than a pig.
A channel that conducts molten metal to molds in a pig bed.
An adult female swine.