ペンパル

noun

pen pal

A friend made and maintained through letter writing, often in a foreign language. The term is a direct loan from English and is used in the same way.

• 小しょう学がく生せいのとき、アメリカにペンパルがいた。

  When I was in elementary school, I had a pen pal in the United States.

• ペンパルと文ぶん通つうするのは楽たのしい。

  It's fun to correspond with a pen pal.