jamboree
Concise Oxford English Dictionary © 2008 Oxford University Press:
jamboree /ˌdʒambəˈriː/
▶noun
- 1 a lavish or boisterous celebration or party.
- 2 a large rally of Scouts or Guides.
– origin C19 (orig. US sl.): of unknown origin.
'jamboree' also found in these Oxford entries:

