斬ざん鉄てつ剣けん

noun

iron-cutting sword

A sword capable of cutting through iron; often appears in fiction, legends, or metaphorical contexts.

• 伝でん説せつの斬ざん鉄てつ剣けんはどんな鎧よろいも切きり裂さくと言いわれている。

  The legendary iron-cutting sword is said to slice through any armor.