Learn how to say Potlatches correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word potlatch:
(among North American Indian peoples of the north-west coast) an opulent ceremonial feast at which possessions are given away or destroyed to display wealth or enhance prestige.
hold a potlatch.
Chinook Jargon, from Nootka p’ačitł ‘make a gift at a potlatch’