|jambə|rē, |jaam- noun
( -s )
Etymology: origin unknown
1. : a euchre hand containing the five highest trumps
2. : a noisy or unrestrained carousal or frolic : spree
got on a jamboree last Tuesday and … drank repeatedly at every saloon, insulted every person they encountered, brandished pistols and discharged them — D.D.Martin
3.
a. : a large festive gathering (as of a political party or a league of sports teams) often involving a program of variety entertainment or exhibition performances
b. : a national or international camping assembly of boy scouts — compare camporee
4. : a long mixed program of entertainment
the summer program also includes Sunday matinees of concerts and fountain play … plus four special night jamborees featuring fireworks — Janet Flanner