potlatch

詳細解釋：

pot.latch

n.（名詞）
A ceremonial feast among certain Native American peoples of the northwest Pacific coast, as in celebration of a marriage or an accession, at which the host distributes gifts according to each guest`s rank or status. Between rival groups the potlatch could involve extravagant or competitive giving and destruction by the host of valued items as a display of superior wealth.
炫財冬宴，冬季贈禮節：西北太平洋沿岸的某些美洲印第安人的慶祝宴會，如婚慶或就職慶典。在宴會上，主人會根據每個客人的不同身份或地位分發禮物。在兩個敵對的部落之間，主人會在這種宴會上炫耀性地大肆搗毀或分發貴重禮物來顯示自己的財富

來源：
Chinook Jargon
奇努克混雜語
from Nootka p`achitl [to make a potlatch gift]
源自 努特卡語 p`achitl [為炫財宴會製作的禮物]