京けい成せい線せんMeaningsNoun1. Keisei LineKanji used京capital成become線lineComposed of京けい成せいKeisei (train line Tokyo-Narita)Noun線せんline; stripe; stria; line (e.g. telephone line); wire; ray (e.g. X-ray); beam; line (e.g. of a railroad); track; route; …Noun