microlith

/ˈmaɪkroʊˌlɪθ/
noun
  1. A very small stone tool, typically from prehistoric times, often used as part of a larger tool or weapon.
    • The museum display showed how microliths were used as barbs for hunting spears.
    • These tiny microliths were once attached to wooden shafts to make arrows.
    • Archaeologists discovered a collection of microliths at the ancient campsite.
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