projectile point
An artifact with a sharp point that was attached to the end of a spear or arrow. Projectile points attached to arrows are sometimes called arrowheads. Projectile points attached to spears are sometimes called spearheads.
Projectile points can be made of a wide variety of materials, including stone, wood, shell, glass, and metal. All the ancient projectile points archaeologists find in the Mesa Verde region are made of stone.

Projectile points dating from different time periods.