Breaker Blade

The Breaker Blade is one of the weapons that can be dropped by defeating the Wall of Flesh. While slightly weaker than Night's Edge, it is a much bigger sword and has stronger knockback.

Trivia

 * This item may be a reference to the Buster Sword wielded by Cloud in Final Fantasy VII. It bears a striking resemblance to the blade and even appears to have a pair of materia attached, as can be done in that game.