Theatre

noun
1.
theater.
noun
1.
a building, part of a building, or outdoor area for housing dramatic presentations, stage entertainments, or motion-picture shows.
2.
the audience at a theatrical or motion-picture performance:
The theater wept.
3.
a theatrical or acting company.
4.
a room or hall, fitted with tiers of seats rising like steps, used for lectures, surgical demonstrations, etc.:
Students crowded into the operating theater.
5.
the theater, dramatic performances as a branch of art; the drama:
an actress devoted to the theater.
6.
dramatic works collectively, as of literature, a nation, or an author (often preceded by the):
the theater of Ibsen.
7.
the quality or effectiveness of dramatic performance:
good theater; bad theater; pure theater.
8.
a place of action; field of operations.
9.
a natural formation of land rising by steps or gradations.
noun
1.

a building designed for the performance of plays, operas, etc
(as modifier): a theatre ticket
(in combination): a theatregoer

2.
a large room or hall, usually with a raised platform and tiered seats for an audience, used for lectures, film shows, etc
3.
Also called operating theatre. a room in a hospital or other medical centre equipped for surgical operations
4.
plays regarded collectively as a form of art
5.
the theatre, the world of actors, theatrical companies, etc: the glamour of the theatre
6.
a setting for dramatic or important events
7.
writing that is suitable for dramatic presentation: a good piece of theatre
8.
(US & Austral, NZ) the usual word for cinema (sense 1)
9.
a major area of military activity: the theatre of operations
10.
a circular or semicircular open-air building with tiers of seats

only mentioned in Acts 19:29, 31. The ruins of this theatre at Ephesus still exist, and they show that it was a magnificent structure, capable of accommodating some 56,700 persons. It was the largest structure of the kind that ever existed. Theatres, as places of amusement, were unknown to the Jews.