
indexpiercer on a flake
is a piercer made on a blank that is a flake
indexdrillbit
A drillbit is a piercer or borer that is short and whose morphology indicates
that it could have been hafted and used as a drill. It is relatively easy
to detect use-wear on drill bits as they have the diagnostic features of
rounded points, which can sometimes be seen by the naked eye, and often
striations around the point indicating a rotational motion. see Grace
1990 b. and Unger-Hamilton et al 1987
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