You can strike two adjacent foes with a single swing.
Prerequisites: Str 13, Power Attack (Feat)
Benefit: As a standard action, you can make a single melee attack at your full base attack bonus against a foe within reach. If you hit, you deal damage normally and can make an additional attack (using your full base attack bonus) against a foe that is adjacent to the first and also within reach. You can only make one additional attack per round with this feat.
Special: The bonus attack from cleave is usually the same as the first attack that was made. If you strike with a battleaxe, then the cleave is with that battleaxe. The main exception is the Brawler, or other classes which have special rules for their Cleave attacks.