校こう友ゆう

noun

schoolmate; alumnus

Refers to a fellow student or graduate of the same school. Often used in formal or alumni-related contexts.

• 彼かれは大だい学がくの校こう友ゆうです。

  He is a university alumnus.

• 校こう友ゆう会かいの集あつまりに参さん加かした。

  I attended a gathering of the alumni association.