Denshi Jisho — Online Japanese dictionary

ろう prison; jail; gaol
Noun 
はろう prison breaking; jailbreak; gaolbreak
Noun, Suru verb 
いしろう jail (gaol) made by placing bars across a cave entrance; cave-prison
Noun 
えいろう life imprisonment
Noun 
けんろう solid
Na-adjective, Noun 
つちろう dungeon
Noun 
みずろう (punishment by being placed in a) water-filled chamber
Noun 
地下 ちかろう dungeon
Noun 
おんなろう jail for women (Edo period)
Noun 
にゅうろう imprisonment
Noun, Suru verb 
座敷 ざしきろう (Edo-period) room for confining criminals or lunatics
Noun 

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