noun
place of confinement; prison; jail
A formal or literary term for a place where someone is confined, such as a prison or detention facility. Not an everyday word; more common in written or official contexts.
彼は禁所から脱走した。
He escaped from the place of confinement.
その建物はかつて禁所として使われていた。
That building was once used as a place of confinement.
Compound of 禁 (prohibition, confinement) and 所 (place). The exact historical derivation is uncertain, but the meaning follows directly from the kanji components.