A style of group meal in which everyone brings a dish to share with the group. It retains the sense of the word as described by Webster 1913, because you're at the mercy of your dining companions' cooking skills.

Pot"luck` (?), n.

Whatever may chance to be in the pot, or may be provided for a meal.

A woman whose potluck was always to be relied on. G. Eliot.

To take potluck, to take what food may chance to be provided.

© Webster 1913.