noun
life imprisonment without work
Legal term for a life sentence without compulsory labor, as opposed to 無期懲役 (life imprisonment with work).
裁判所は被告に無期禁錮の判決を言い渡した。
The court sentenced the defendant to life imprisonment without work.
Compound of 無期 (indefinite term) and 禁錮 (imprisonment without work), a legal term established in modern Japanese law.