水みず牢ろう

noun

water-filled chamber (punishment)

Historical punishment method where a person is confined in a chamber that fills with water. Rare in modern usage; mainly encountered in historical or dramatic contexts.

• 江え戸ど時じ代だいには水みず牢ろうという刑けい罰ばつがあった。

  In the Edo period, there was a punishment called mizurō (water-filled chamber).