(among American Indians of the northern Pacific coast, especially the Kwakiutl) a ceremonial festival at which gifts are bestowed on the guests and property is destroyed by its owner in a show of wealth that the guests later attempt to surpass.
2.
Pacific Northwest. a party or celebration.
Origin: 1835–45; < Chinook Jargon pátlač, páλač < Nootka p̉aλp̉a- (reduplication of p̉a- make ceremonial gifts in potlatch) + -č suffix marking iterative aspect