社しゃ内ない便びんMeaningsNoun1. interoffice mail; in-house mailKanji used社company内inside便convenienceComposed of社しゃ内ないwithin a company; in-house; within a shrine; shrine precinctsNo-adjective便びんflight (e.g. airline flight); trip (e.g. train trip); sailing (e.g. ferry voyage); service; mail; post; letter; opportunity; chanceNoun