noun
family business; family trade
Refers to a business or trade passed down through generations within a family.
彼は大学を卒業した後、家業を継いだ。
After graduating from university, he took over the family business.
noun
A somewhat formal or literary way to refer to one's own profession or trade, often with a nuance of it being a family or inherited calling.
彼は家業として大工をしている。
He works as a carpenter by trade.