Obsolete term for a post office, used in the early Meiji period before the modern 郵便局 became standard.
In the early Meiji period, 駅逓局 handled postal services.
Compound of 駅逓 (ekitei, 'relay station') and 局 (kyoku, 'office'). The exact historical derivation is uncertain; the term was used for early postal facilities before being replaced by 郵便局.