Attributive use of the noun (e.g., "caucus rules"); treated as an adjective per guidelines.
Definitions
caucusnoun
A meeting of members of a political party or movement, typically to select candidates or decide policy.
The party held a caucus to determine their stance on the new legislation.
A group within a legislative or decision-making body that meets to discuss and pursue common interests or goals.
The environmental caucus met to strategize on the upcoming climate change bill.
In some U.S. states, a local gathering of registered members of a political party to select delegates to a convention or to express preferences among candidates.
Turnout at the Iowa caucus exceeded expectations.
caucusverb
To hold or form a caucus, especially to discuss and decide on a course of action.
The party members will caucus tomorrow to decide on their candidate for the upcoming election.