noun
stone harvesting knife; stone knife
Archaeological term for a prehistoric stone tool used for harvesting grain or cutting plants. Often associated with Jōmon or Yayoi period artifacts.
この遺跡からは石包丁が多数出土している。
Many stone harvesting knives have been excavated from this site.
石包丁は主
Stone knives are thought to have been used mainly for harvesting rice and other crops.