an iron block containing holes and grooves of various sizes, used for heading bolts and shaping objects not easily worked on an anvil.
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Origin of swage block
First recorded in 1835–45
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
an iron block cut with holes, recesses, and grooves to assist in the cold-working of metal
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