noun
special post office
A type of post office in Japan, often smaller and with limited services compared to ordinary post offices. The term is specific to the Japanese postal system.
この地域には特定郵便局が一つしかない。
There is only one special post office in this area.
普通郵便局 is an ordinary post office with full services, while 特定郵便局 is a smaller, special post office with limited functions.
Compound of 特定 (special, specific) and 郵便局 (post office). The term is a fixed official designation within Japan Post.