caucus-n; 3 Senses

Sense Number 1: an organized group of people with a shared cause

Commentary: CAUCUS[+group][+social][+people][+shared][+cause]
NOTE: usually refers to a political organization

Examples:
The caucus met with representatives from the steel industry.
The president expressed willingness to speak with caucus members.

Mappings:
PropBank: NM
WordNet 0.0 Sense Numbers: 1b

Sense Number 2: a private decision-making meeting of an interest group

Commentary: CAUCUS[+activity][+meeting][+private][+decision_making]
NOTE: usually refers to a closed political meeting

Examples:
A new chairman of the Democratic party was picked at the last caucus.
The senate caucus ended sometime after midnight.

Mappings:
PropBank: NM
WordNet 3.0 Sense Numbers: 1

Sense Number 3: none of the above

Commentary: Automatically generated NOTA sense (bbn)

Examples:

Mappings: