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noun, plural -cus⋅es, verb | 1. | U.S. Politics.
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| 2. | any group or meeting organized to further a special interest or cause. |
| 3. | to hold or meet in a caucus. |
| 4. | to bring up or hold for discussion in a caucus: The subject was caucused. The group caucused the meeting. |

A meeting of members of a political party to nominate candidates, choose convention delegates, plan campaign tactics, determine party policy, or select leaders for a legislature.