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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
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
A mold of larger size than a pig.
A channel that conducts molten metal to molds in a pig bed.
An adult female swine.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.