スピード線せん

noun

speed lines; motion lines

In manga, anime, and illustration, lines drawn behind a moving object or character to convey speed or motion. A technical term in art.

• 漫まん画がでは、キャラクターの後うしろにスピード線せんを描えがいて動うごきを表ひょう現げんする。

  In manga, speed lines are drawn behind a character to express movement.