a rotary saw consisting of a hollow cylinder with teeth formed on one end or edge, as a trephine or trepanning saw.
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Origin of crown saw
First recorded in 1860–65
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for crown saw
By a second machine the holes for the pins are bored, and they are formed into perfect circles by means of a crown-saw.
British Dictionary definitions for crown saw
a hollow cylinder with cutting teeth forming a rotary saw for trepanning
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