同どう窓そう

noun, noun which may take the genitive case particle 'no'

same school graduate; fellow alumnus

Refers to the relationship of having graduated from the same school, or a person with that relationship. Often used in the phrase 同窓会 (alumni reunion).

• 彼かれは私わたしの大だい学がくの同どう窓そうです。

  He is a fellow alumnus of my university.

• 来らい月げつ、同どう窓そう会かいが開ひらかれる。

  An alumni reunion will be held next month.