ねずばん 不寝番 LinksSentence search for 不寝番Sentence search for ねずばんSentence search for ふしんばんKanji details for 不, 寝 and 番Edit in JMdict Noun1. sleepless vigil; night watch; vigilanceOther forms不寝番 【ふしんばん】 Discussions Log in to talk about this word.