一本账

Traditional (Taiwan): 一本賬

yīběnzhàng ㄧ ㄅㄣˇ ㄓㄤˋ

    • sole source of income that everything depends on

Character by character

Saying俗语俗語

Idiom惯用语 · Rarely used now

Literally
one account book
Meaning
A single source of income that everything depends on. Said of a household or unit with only one way of earning.

Sources