card house

noun3

1. •
   A house of cards.

   • So the whole caravansary had fallen in like a card house at the disapproval in her eyes. — 1925
2. •
   A business where patrons play cards.

   • He owned a goulash or card house, on upper Broadway, where I got many laughs. — 1956
3. •
   Alternative form of cardhouse.