opera (noun) /ˈɑ.pəɹ.ə/, /ˈɑ.pɹə/
1
(music) A theatrical work, combining drama, music, song and sometimes dance.
2
(music) The score for such a work.
3
A building designed for the performance of such works; an opera house.
4
A company dedicated to performing such works.
5
(by extension) Any showy, melodramatic or unrealistic production resembling an opera.
6
plural of opus; a collection of work.