tranchet

tranchet [trahn-shey; French trahn-she] Word Origin noun, plural tran·chets [trahn-sheyz; French trahn-she] /trɑnˈʃeɪz; French trɑ̃ˈʃɛ/. Archaeology.

1. a stone implement with a horizontal, chisellike cutting edge, found at Mesolithic and Neolithic sites in macrolithic form, used as an adz, and in microlithic form, often mounted as the cutting head of an arrow.

Compare macrolith, microlith. Origin of tranchet French, equivalent to tranch(er) to cut (see trench) + -et -et