- a cast-iron or steel block for supporting a journal or bearing.
Origin of pillow block
First recorded in 1835–45
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for pillow block
Historical Examples of pillow block
Suppose, for example, we are measuring between the jaws of a pillow-block.
- machinery a block that supports a journal bearingAlso called: plummer block
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