D defs.my
Entry 2 senses Webster, 1913

Potlatch

/pät'-lăchˌ/ · Pot·latch · IPA /ˈpɑtˌlæt͡ʃ/
01 n. Among the Kwakiutl, Chimmesyan, and other Indians of the northwestern coast of North America, a ceremonial distribution by a man of gifts t…
  1. 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. 2.
    Hence, a feast given to a large number of persons, often accompanied by gifts.[Colloq., Northwestern America]