A dwarven urgrosh is a double weapon—an axe head and a spear point on opposite ends of a long haft. The urgrosh’s axe head is a slashing weapon that deals 1d8 points of damage. Its spear head is a piercing weapon that deals 1d6 points of damage. You can use either head as the primary weapon. The other becomes the off-hand weapon. If you use an urgrosh against a charging character, the spear head is the part of the weapon that deals damage.
Dwarves treat dwarven urgroshes as martial weapons.
Pathfinder RPG Core Rulebook. Copyright 2009, Paizo Publishing, LLC; Author: Jason Bulmahn, based on material by Jonathan Tweet, Monte Cook, and Skip Williams.