A private meeting or gathering, especially of high-ranking officials or church leaders to make important decisions.
From Latin 'conclave' meaning a room that can be locked, from 'con-' (with) + 'clavis' (key). The papal conclave to elect the Pope literally happens behind locked doors.
The most famous conclave is the papal election—cardinals meet in the Sistine Chapel and vote until one person receives two-thirds majority, with white smoke signaling they've chosen a new Pope.
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