Definition of play money in English:

play money

noun

  • 1Money used to speculate in business, or in stocks and shares.

  • 2Imitation money used in playing games, etc.; toy money. Hence: actual money considered of little value.

Origin

Early 18th century (in an earlier sense). From play + money.

Pronunciation

play money

/ˈpleɪ ˌmʌni/