往おう信しん

noun

first half of a reply card; outgoing message

Refers to the part of a reply postcard or message that the original sender writes, as opposed to the reply portion (返信). Used in postal and communication contexts.

• 往おう信しんはがきの往おう信しん面めんに用よう件けんを書かいてください。

  Please write your message on the outgoing-message side of the reply postcard.