又また弟で子し

noun

indirect pupil; pupil of one's own pupil

Refers to a student taught by one's own student, i.e., a grand-pupil in a master-disciple lineage. Common in traditional arts, crafts, or martial arts contexts.

• 彼かれは私わたしの弟で子しの又また弟で子しです。

  He is an indirect pupil of mine, being my own student's student.

• 茶さ道どうの世せ界かいでは、又また弟で子しも大たい切せつに指し導どうする。

  In the world of tea ceremony, even indirect pupils are carefully guided.