いちだいいちど 一代一度 LinksSentence search for 一代一度Sentence search for いちだいいちどKanji details for 一, 代 and 度Edit in JMdict Noun which may take the genitive case particle 'no', Noun1. once in an emperor's reign; event that takes place only once in a sovereign's reign Discussions Log in to talk about this word.