Meaning of stumer in English:

stumer

Pronunciation /ˈstjuːmə/

noun

informal British
  • 1A worthless cheque or a counterfeit coin or note.

    • ‘he got your picture back from the man who gave you a stumer cheque’
  • 2A failure.

    • ‘his piece was a stumer, a complete flop’

Origin

Late 19th century of unknown origin.