How to read: ろうしゅう
Pronunciation: 
Same names and idioms in reading:
陋習 老醜 ろう習 牢愁
Names and idioms with total stroke of 12:
大廻 係わる はめ込み 下垰 谷ノ内
Names and idioms similar to 牢囚:
堅牢堅固 永牢 間者牢 牢路次
Yojijukugo(idioms with 4 Kanji characters) including 牢囚:
囚首喪面 太牢滋味 大牢滋味