instep borer

Noun

A torture device placed on the foot like a boot, on which there is a blade that can be inserted into the sole of the foot.

Japanese Meaning

足部に装着する拷問器具。ブーツのような形状で、足の裏に刃を差し込む仕掛けがある。

Despite my protests, they forced my foot into the instep borer, the cold blade poised to pierce the sole.

抗議しても、彼らは私の足を足底に刃を差し込めるブーツ状の拷問器具に押し込んだ。

Sense（1）

A torture device placed on the foot like a boot, on which there is a blade that can be inserted into the sole of the foot.

instep borers

（ plural ）