0 in the card game poker, four cards of the same suit (= colour and type) and one of a different suit:
Viewers who read that their favourite show was facing cancellation felt like they'd been dealt a busted flush.
If you go down this road without a proper debate in parliament, we might as well admit that, in this land of freedom, genuine democracy is a busted flush.
"Cameron is a busted flush," said the editor of one newspaper. "He's had it."
Our booming arts, especially in the theatre, are in danger of being a busted flush.