投とう影えい線せんMeaningsNoun1. projection lineKanji used投throw影shadow線lineComposed of投とう影えいprojection (of a shadow); casting (a reflection); reflection; cast shadow; (geometric) projection; reflection (of feelings, experiences, etc.); projectionNoun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