ly ‧ ce ‧ um /laɪˈsiːəm/ BrE AmE noun [countable]
[ Date: 1500-1600 ; Language: Latin ; Origin: Lyceum school near Athens where the ancient Greek thinker Aristotle taught, from Greek , from lykeios name given to Apollo, Greek god of poetry ]
American English old-fashioned a building used for public meetings, concerts, speeches etc