Celt

A prototype of the battle axe, a celt resembles an axe head, roughly oval in shape, less than a foot long and a few inches wide. Celts are made of flint, quartz, granite, or obsidian. If a suitably sized stone or mineral fits comfortably in the hand, no modifications are necessary. Otherwise, the edges is chipped to make it easier to hold. Holes may be bored into flat celts; the user inserts his thumb and fingers into the holes, then grips the celt in his fist. A celt may be polished by grinding the surfaces in water and sand. When not wielded as a blugeoning weapon, a celt serves as a chisel or wood-splitter.

[Complete Barbarian's Handbook]