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. Due to its size, it also may hit a foe multiple times with only one swing, making it a very efficient weapon.

Trivia

 * This item may be a reference to the Buster Sword wielded by Cloud Strife in the game Final Fantasy VII and related movie Final Fantasy: Advent Children. It is similar in both name and appearance, even having what resemble a pair of "materia" attached, as can be done in the game. The name also brings to mind the "Limit Breaks" from the game, which are super powerful attacks unlocked when a character has taken many hits in combat.
 * Due largely to the teeth on its blade, it also resembles the chainswords of the Warhammer 40,000 universe; however that could simply be due to its pixelated graphics.
 * It has the longest range and strongest knockback of all of the swords in the game.