Wordnet 3.0
NOUN (2)
1.
marks on a glaciated rock caused by the movement of a glacier;
2.
a mark made by a chattering tool on the surface of a workpiece;
The Collaborative International Dictionary of English v.0.48:
Chatter mark \Chat"ter mark`\
(a) (Mach.) One of the fine undulations or ripples which are
formed on the surface of work by a cutting tool which
chatters.
(b) (Geol.) A short crack on a rock surface planed smooth by
a glacier.
[Webster 1913 Suppl.]
WordNet (r) 3.0 (2006):
chatter mark
n 1: marks on a glaciated rock caused by the movement of a
glacier
2: a mark made by a chattering tool on the surface of a
workpiece