根城 ねじろ Meanings Noun stronghold; citadel base (of operations); headquarters Kanji 根 root. Read as ね. 城 castle. Read as しろ. Example sentences 泥棒は、間違いなくここにいるはずよ。きっと、どこかに根城があるから、そこを見つけさえすればいいの。The thief has to be in here. I'm sure somewhere around is his stronghold so if we can just find that we've got him. Jinuma: Japanese Dictionary · Word lists