Definition from Wiktionary, the free dictionary
From Zulu imbizo.
- (South Africa) A forum for discussion of policy.
- When the Zulu nation calls for an imbizo, it's generally a spectacular affair. These mass gatherings, often organised for social and political purposes, have an important role for this huge and powerful African tribe. 
- Imbizo is a forum for enhancing dialogue and interaction between government and ... Imbizo also highlights people's concerns, grievances and advice about ..." 
imbizo 9/10 (plural izimbizo)