chatter mark


noun

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.

Origin of chatter mark

First recorded in 1885–90

British Dictionary definitions for chatter mark

chatter mark

noun

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)