Sentence:  Then we had a <WSD>potluck</WSD> dinner. Each family brought a different dish. I always like Mrs. Rowlani's Persian rice best. I ate three helpings. Lisa likes it too, but she picks out the raisins and gives them to Fred [a dog]. 
Meaning of the word marked with <WSD> tags:  A shared meal consisting of whatever guests have brought (sometimes without prior arrangement); a potlatch; also, a dish of food brought to such a meal.