noun
having nothing but one's body; penniless; starting from scratch
Idiomatic expression meaning to have no resources or money, often used when starting a venture or describing someone who has lost everything. Conveys the image of being stripped to nothing but one's own body.
彼は裸一貫から大企業を築き上げた。
He built a large company from nothing.
事業
The business failed and he was left penniless.