a ceremonial performance given by one of the Dancing Societies of the Kwakiutl and other coastal tribes during the winter months. Hence, winter dancing.
1955  Most potlatches took place in the autumn, after the people had stored away their food and before the secret society began its winter dances.
1964  But potlatching and winter dancing did not die easily... .
1964  When the missionaries swept out heathenism, they included the social forms that supported it--potlatches, winter dances, and the systems of class and rank.