A meeting hall is a place where people gather for meetings, conferences, and other events. The two crossword solutions for the term 'meeting hall' are 'CITADEL' and 'LYCEUM'. A CITADEL is a fortress or stronghold, often used as a meeting place in times of war. A LYCEUM is an ancient Greek building used for educational and cultural activities, such as lectures, debates, and concerts. Both citadels and lyceums can be used as meeting halls.