caucus
1. Chiefly US and Canadiana. a closed meeting of the members of one party in a legislative chamber, etc., to coordinate policy, choose candidates, etc.
b. such a bloc of politicians
2. Chiefly USa. a group of leading politicians of one party
b. a meeting of such a group
3. Chiefly US a local meeting of party members
4. Brit a group or faction within a larger group, esp a political party, who discuss tactics, choose candidates, etc.
5. Austral a meeting of the members of the Federal parliamentary Labor Party
6. NZ a formal meeting of all Members of Parliament belonging to one political party
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005