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1. A situation or circumstance in which the outcome is uncertain but where one takes a chance in the hopes of achieving a fortunate or beneficial end result. (Used especially in the phrase "take pot luck.") I like to just take pot luck when I travel to new cities and try out whatever local establishments I happen upon. I love going into old antique stores. I know finding something worthwhile is just a bit of pot luck, but it's fun to see all the old things they have!
2. (More often "potluck.") A shared meal in which separate dishes are prepared and/or brought by different individuals; the food that is brought to such a meal. Primarily heard in US. Sarah and I are hosting a pot luck this Saturday, and you are both welcome to join us! Just bring something that we can all share! Potluck dinners are a great way for neighbors or groups of friends to spend time together or get to know each other better. We're just asking guests to bring a bit of pot-luck, nothing fancy!
be pot luck
To be a casual meal in which nothing has been prepared in advance. The phrase refers to a "potluck": a shared meal in which separate dishes are prepared and/or brought by different individuals. Primarily heard in US. I hope you can join us for dinner on Saturday—it'll be pot luck, so just bring something that we can all share!
Come to eat whatever happens to be served; also, take one's chances. For example, You're welcome to join us for supper but you'll have to take potluck, or When the flight was canceled, passengers had to take potluck on other airlines. This idiom alludes to accepting whatever happens to be in the cooking pot. [Second half of 1700s]
be pot luck
If you ask someone to have a meal at your house and you tell them it will be pot luck, you mean that you have not planned it or prepared any special food. Note: `Pot luck' is usually written as `potluck' in American English. `We'll just be casual and eat in the kitchen. It's just pot luck,' Moira said. `Hope you don't mind.' Note: A potluck is a meal at which different guests bring different parts of the meal.