朱しゅ筆ひつを入いれる

expression, ichidan verb

make corrections; correct with a red pen

Literally 'to put in the red brush', referring to the act of correcting or revising a text, often by a teacher or editor. Rare term; more commonly expressed as 朱を入れる or 添削する.

• 先せん生せいが生せい徒との作さく文ぶんに朱しゅ筆ひつを入いれる。

  The teacher corrects the student's composition with a red pen.