明めい暗あん境きょう界かい線せんMeaningsNoun1. terminator; twilight zoneKanji used明bright暗dark境border界realm線lineComposed of明めい暗あんlight and darkness; light and shadeNoun境きょう界かいboundary; border; limit; bounds; frontierNoun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