What do a.m. and p.m. stand for?

pillow block

noun, Machinery
a cast-iron or steel block for supporting a journal or bearing.
Origin of pillow block
1835-45 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for pillow block
  • The main bearing is a pillow block-mounted, double-row spherical bearing.
  • pillow block bearings bolted on the top of these posts support the horizontal axis of the goniometer.
  • Bearings shall be heavy-duty pillow block, self-aligning ball or roller, and antifriction type.
  • Provide shafts with pillow block or flanged self-aligning type bearings.
  • Visually inspect the pillow block bushing holes for corrosion and mechanical damage.
British Dictionary definitions for pillow block

pillow block

(machinery) a block that supports a journal bearing Also 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
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