Webster’s Revised Unabridged Dictionary · 1913
Potlatch
Pot′latch′, n. [Chinook potlatch, pahtlatch, fr. Nootka pahchilt, pachalt, a gift.] 1. Among the Kwakiutl, Chimmesyan, and other Indians of the northwestern coast of North America, a ceremonial distribution by a man of gifts to his own and neighboring tribesmen, often, formerly, to his own impoverishment. Feasting, dancing, and public ceremonies accompany it.
2. Hence, a feast given to a large number of persons, often accompanied by gifts. [Colloq., Northwestern America]