同どう門もん

noun

fellow student; schoolmate; alumnus of the same school

Refers to someone who studied under the same teacher, attended the same school, or belongs to the same academic lineage. Often used in formal or nostalgic contexts.

• 彼かれは私わたしの大だい学がくの同どう門もんです。

  He is a fellow alumnus of my university.

• 同どう門もんの先せん輩ぱいに仕し事ごとを紹しょう介かいしてもらった。

  A senior from the same school introduced me to a job.