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An arrowhead is a tip, usually sharpened, added to an arrow to make it more deadly or to fulfill some special purpose.
The earliest arrowheads were made of stone and of organic materials; as human civilization progressed other materials were used.
There is no agreement upon their purpose or purposes, which may have included the processing of food, medicine or pigments, storage, arrow-production or fire-drilling.
"Hunting with a bow and arrow requires intricate multi-staged planning, material collection and tool preparation and implies a range of innovative social and communication skills." Arrowheads are attached to arrow shafts to be shot from a bow; similar types of projectile points may be attached to a spear and "thrown" by means of an Atlatl (spear thrower).
The arrowhead or projectile point is the primary functional part of the arrow, and plays the largest role in determining its purpose.
Often, these heads rely on force created by passing through an animal to expand or open.
Variously known as cupstones, "anvil stones," "pitted cobbles" and "nutting stones," among other names, these roughly discoidal or amorphous groundstone artifacts are among the most common lithic remains of Native American culture, especially in the Midwest, in Early Archaic contexts.