白河夜船、白川夜船、白河夜舟、白川夜舟
しらかわよふね、しらかわよぶね
shirakawayofune
JMdict entry #1475040
- expressions (phrases, clauses, etc.) yojijukugo being fast asleep (and totally unaware of what is going on around one)
- expressions (phrases, clauses, etc.) know-it-all manner