a mark left by a tool that has been chattering.
Geology. any of a series of irregular gouges made on rock surfaces by the slipping of rock fragments held in the lower portion of a glacier.
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Origin of chatter mark
First recorded in 1885–90
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British Dictionary definitions for chatter mark
any of a series of grooves, pits, and scratches on the surface of a rock, usually made by the movement of a glacier
another name for chatter (def. 8)
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