whatever happens to be available especially when offered to an unexpected guest or when brought by guests and shared by all;
"having arrived unannounced we had to take potluck"
"a potluck supper"
- That includes those who attend our Saturday group in Saskatoon and the Thursday morning group in Kauai at which we have weekly sessions and potluck lunches.
- The scheduled flight was canceled and passengers had to take potluck on the other airlines.