Definition of money machine in US English:

money machine

noun

  • 1The prevailing financial system; financial institutions collectively.

  • 2A person who or thing which makes a lot of money or has no purpose other than making money; a lucrative business, product, etc.

  • 3A machine which converts, takes, or dispenses money; specifically an automatic teller machine, a cash dispenser.

Origin

Early 19th century; earliest use found in Alexander Hamilton (bap. 1739, d. 1802), physician and obstetrician. From money + machine.

Pronunciation

money machine

/ˈmʌnɪ məˌʃiːn/