五十瀬いせMeanings1nounmany rapids; many torrentsarchaicArchaic noun referring to a place with many rapids or rushing waters. Not used in modern Japanese outside of historical or literary contexts.古ふるい和わ歌かに「五十い瀬せの川かわ」という表ひょう現げんが見みられる。The expression '五十瀬の川' (river of many rapids) appears in old waka poetry.
