noun
prison cell; ward
Refers to a cell or ward in a prison or detention facility.
囚人は監房で静かに本を読んでいた。
The prisoner was quietly reading a book in the cell.
新しい監房は以前より少し広くなった。
The new cell is a little larger than the previous one.
Compound of 監 (かん, 'watch, oversee') and 房 (ぼう, 'chamber, room'), literally 'watch chamber'. The exact historical derivation is uncertain, but the spelling is conventionally associated with a prison cell.