STONE PROJECTILE POINT GLOSSARY
Base: the lower end of a projectile point, where it attaches to a haft. There are several common projectile point base shapes.
Straight: the base is flat
Concave: the base is indented
Convex: the base protrudes
Blade: that part of a projectile point above the hafted stem area.
Hafted area: the portion of a projectile point secured to a spear, dart, arrow, knife, or drill.
Notch: an indentation on the sides of the blade or at the corners of the base. Native Americans notched projectile points to create a way to attach them to spears, darts, arrows, knives, or drills.
Projectile Point: a bifacially-flaked tool that is used as the tip of a spear, dart, arrow, knife, or drill.
Stem: hafted area of a projectile point. There are several common stem shapes:
Bifurcate: a stem that is notched at the base.
Contracting: a stem with sides that converge towards the base.
Corner Notched: a stem that is notched at the corner.
Expanding: a stem that widens toward the base.
Side Notched: a stem that is notched on the side.
Square: a stem with parallel sides.