WHAT IS THE BASAL EDGE ?

BASAL EDGE: proximal edge of a triangular or lanceolate projectile or stem of a stemmed type. There are eight major types of basal edges: convex, straight, concave, auriculate, lobbed, bifurcated, fractured, and snapped.

WHAT IS THE ARROWHEAD ?

ARROWHEAD: A small object of bone, metal, or stone that has been formed as the pointed end of an arrow for penetration and is often found at sites of prehistoric peoples. The earliest known are Solutrean points of the Upper Paleolithic. Arrowheads are often the only evidence of archery since the arrow shaft and bow rarely survive. The term projectile point is generally preferable because it avoids an inference regarding the method of hafting and propulsion. Most often, arrowheads were placed in a slot in the shaft, tied, and then fixed with resin. [arrowhead, projectile point]

WHAT IS THE ARROW STRAIGHTENER ?

ARROW STRAIGHTENER: A stone with a regular, straight groove on one face. It is thought to have been used to smooth wooden shafts of arrows, so the name is misleading. [arrowshaft straightener]