noun
one's master's business; official business
Refers to business conducted on behalf of one's master, employer, or superior; often used in historical or formal contexts.
主用で江戸へ参ります。
I am going to Edo on my master's business.
noun
necessary business; important errand
Obsolete term for pressing or essential personal business; no longer used in modern Japanese.
古文書には「主用ありて罷り越す」と記されている。
In old documents it is written, 'I come on necessary business.'