1) Ancient Greek music hall 2) Ancient recital hall 3) Concert hall 4) Concert site 5) Greek concert hall 6) Music hall 7) Old concert hall 8) Old theater 9) Performance hall 10) Performance place for Plato 11) Site of a Greek tragedy 1) Arena 
a usually small theatre or concert hall
• (n.) See Odeon.
(Latin: `concert hall,` from Greek ideion, `school of music`), comparatively small theatre of ancient Greece and Rome, in which musicians and ... [3 related articles]
A small theatre with a permanent roof that was used for plays, speeches and recitations. 
O·de'um noun [ Latin ] See Odeon . 
odeum (singular)
(Latin, pl. odea; from the Greek: oideion: singing place). Small roofed theatre (theatrum tectum) or recital hall used for musical presentations, poetry readings, lectures, or debates. Odea were built in two styles: buildings with rectangular outer walls like a bouleuteria