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pig bed

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noun Metallurgy.
  1. a bed of sand for molding pigs into which molten metal is poured.

Origin of pig bed

First recorded in 1815–25
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for pig bed

pig bed

noun
  1. a bed of sand in which pig iron is cast
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012