street party
noun [ C ] uk/ˈstriːt ˌpɑː.ti/ us/ˈstriːt ˌpɑːr.t̬i/
（通常由当地居民组织的）街头派对，街道聚会
a party that is held outdoors in a street or other public place, often organized by the people living in the local area
The Queen’s Diamond Jubilee was celebrated with street parties. 人们以举办街头派对的方式来庆祝女王的钻石禧年。