noun.
Plural of opus.
noun.
A form of extended dramatic composition in which music is an essential and predominant factor; a musical drama, or a drama in music. ; ; ;
noun.
The score or words of a musical drama, either printed or in manuscript; a libretto.
noun.
A theater where operas are performed; an opera-house.
noun.
The administration, revenue, and property of an Italian church or parish.
noun.
Specifically, a ballad-opera (see def. 1).