jamboree
/ˌdʒæmbəˈriː/noun
1- a large celebration or party, typically a lavish and boisterous one喧闹的盛大庆典（或聚会）：
the film industry's annual jamboree in Cannes.
在戛纳举行的电影业每年一度的盛大庆典。
1.1
- a large rally of Scouts or Guides童子军的大会。
词源
mid 19th cent. (originally US slang)： of unknown origin.