Definition of stumer in English:

stumer

Line breaks: stu¦mer
Pronunciation: /ˈstjuːmə
 
/

noun

British informal
1A worthless cheque or a counterfeit coin or note: [as modifier]: 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.

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