Official or government business; matters used for public or official purposes (opposed to private use).
部長は今日は公用で東京に出張している。
The director is on a business trip to Tokyo today on official business.
この車は公用車なので私的利用はできない。
This car is an official vehicle and cannot be used privately.
公用の書類には機密扱いのものが多い。
Many official documents are treated as confidential.
Public use; usage by government or public institutions for official purposes.
この施設は公用に供される予定だ。
This facility is scheduled to be used for public (official) purposes.
公用のために一部の土地を収用することが検討された。
Expropriation of part of the land for public use was considered.