A barbed fang

From MUME

l fang;

This wicked weapon is essentially a long and slender knife whose edges have been notched like a harpoon, ensuring the formation of gaping bloody wounds when ripped out of a victim.

con fang;

This piercing weapon can be wielded one-handed. It is good while attacking and average while defending; its speed is very fast, and it inflicts average damage upon hitting. It weighs a couple of pounds.