conclave

n private meeting (eg of cardinals to elect a Pope) 秘密会议（如红衣主教选举教皇者）: sit/meet in conclave, ie hold a private meeting 参加[举行]秘密会议.

concert-goer, concert-master, concerted, concertina, concerto, concess, concession, concessionaire, concessionary, concessive, conch, conchology, conciliate, conciliation, conciliatory, concise, concisely, conciseness, conciseness, concision, concision, conclude, conclusion, conclusive, conclusively, concoct, concoction, concomitant, concord, concordance, concordant, concordat, concourse, concrete, concrete mixer, concrete music, concrete poetry, concretely, concretion, concubine, concupiscence,