IPA: /ˈhæməstəʊn/
KK: /ˈhæmərstoʊn/
A type of stone used in ancient times as a tool for hitting or striking, similar to how a hammer is used today.
Archaeologists found several hammerstones at the excavation site, indicating that early humans used them for various tasks.
Hammerstone → The word is formed from "hammer" (from Old English "hamor", meaning a tool for striking) and "stone" (from Old English "stan", meaning a hard, solid mineral matter). A hammerstone is a stone used as a hammer, typically for striking or shaping other stones.
Think of a 'tool for striking' ('hammer') and a 'hard mineral' ('stone') — together, they create a hammerstone, which is a stone used for striking.