noun
chipped stone tool; flaked stone tool
Archaeological term for a stone tool made by striking flakes off a core, as opposed to ground stone tools (磨製石器).
打製石器は旧石器時代に広く使われた。
Chipped stone tools were widely used in the Paleolithic period.
磨製石器 is a ground/polished stone tool, made by grinding rather than chipping, and is associated with the Neolithic period.
Compound of 打製 (chipped, made by striking) and 石器 (stone tool).