mi|cro|blade «MY kroh BLAYD», noun.
Archaeology. a thin sliver chipped delicately from a prepared flint core, usually with parallel edges, used especially in the paleolithic and mesolithic periods: »
Commonly inserted as “side blades” into lateral grooves in antler and bone projectile points, such “microblades” lacerated the flesh of wounded game animals and thus promoted free bleeding and rapid death (Charles E. Borden).
Useful english dictionary. 2012.