n (archaeology) A piece of prepared, sharp-edged stone, often flint, at least twice as long as it is wide; a long flake of ground-edge stone or knapped vitreous stone.
n (context|ultimate frisbee) A throw characterized by a tight parabolic trajectory due to a steep lateral attitude.
n A bulldozer or surface-grading machine with mechanically adjustable blade that is nominally perpendicular to the forward motion of the vehicle.