いっせんひ 一線を引く Show inflections LinksSentence search for 一線を引くSentence search for いっせんをひくKanji details for 一, 線 and 引Edit in JMdict Expressions (phrases, clauses, etc.), Godan verb with 'ku' ending1. to draw the line; to set a boundary; to make a clear distinction Discussions Log in to talk about this word.