1. stone implement (e.g. stone age arrowheads); stone tool
Wikipedia definition
2. Stone toolA stone tool is, in the most general sense, any tool made either partially or entirely out of stone. Although stone tool-dependent societies and cultures still exist today, most stone tools are associated with prehistoric, particularly Stone Age cultures that have become extinct. Archaeologists often study such prehistoric societies, and refer to the study of stone tools as lithic analysis.
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Read “石器” on Japanese Wikipedia
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