さんてつ 三徹 LinksSentence search for 三徹Sentence search for さんてつSentence search for 3徹Kanji details for 三 and 徹Edit in JMdict Noun, Suru verb1. staying up all night three nights in a row; triple all-nighterSlangOther forms3徹 【さんてつ】 Discussions Log in to talk about this word.