noun
A sword used for killing; often carries a literary or dramatic tone, emphasizing the weapon's deadly purpose rather than its physical description.
彼は殺人刀を手に、敵陣へと突き進んだ。
He charged into the enemy camp with a killing sword in hand.
その刀はまさに殺人刀と呼ぶにふさわしい切れ味だった。
That sword had a sharpness truly worthy of being called a killing blade.