Webster’s Revised Unabridged Dictionary · 1913
Jambooree
Jam′boo·ree′, n. [Etym. uncertain. Cf. Jambone.] 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. W. A. Fraser.