Jamboree
Jamboree , noun
[Etym. uncertain. Compare Jambone.]
1.
A noisy or unrestrained carousal or frolic; a spree. [Slang] — Kipling
A Calcutta-made pony cart had been standing in front of the manager's bungalow when Raja Singh started on his jamboree.
2.
a large festive gathering.
3.
an assembly of boy scouts, usually at the national or international level, including camping among the activities; -- a term adopted by the Boy Scouts organization.