feather
A technique which produces a flake which terminates in an edge with a minimal margin. Produces blades or flakes with edges and distal ends which are very sharp. Feathered edge leaves slight ridges on the objective piece, a characteristic of precision collateral flaking (Crabtree 1982, 33-36). Although feathered edges are thin and sharp they are also easily broken. (Also see Owen 1988, 220).