theatre

n. arena, stadium, playhouse (alternate spelling for theater)

Theatre (or theater, see spelling differences) (from French "théâtre", from Greek "theatron", θέατρον, meaning "place of seeing") is the branch of the performing arts defined as simply as what "occurs when one or more human beings, isolated in time and/or space, present themselves to another or others." By this broad definition, theatre has existed since the dawn of man, as a result of human tendency for story telling. Since its inception, theatre has come to take on many forms, often utilizing elements such as speech, gesture, music, dance, and spectacle, combining the other performing arts, often as well as the visual arts, into a single artistic form. Modern Western theatre is dominated by realism, although many other forms, including classical and experimental forms, as well as Eastern forms, are frequently performed.
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Noun
1. a building where theatrical performances or motion-picture shows can be presented; "the house was full"
(synonym) theater, house
(hypernym) building, edifice
(hyponym) arena theater, theater in the round
(part-meronym) box office, ticket office, ticket booth
(classification) dramaturgy, dramatic art, dramatics, theater
2. the art of writing and producing plays
(synonym) dramaturgy, dramatic art, dramatics, theater
(hypernym) communication, communicating
(hyponym) stage
(part-meronym) dramatic composition, dramatic work
(class) upstage
3. a region in which active military operations are in progress; "the army was in the field awaiting action"; "he served in the Vietnam theater for three years"
(synonym) field, field of operations, theater, theater of operations, theatre of operations
(hypernym) region
(part-holonym) theater of war, theatre of war
(part-meronym) combat zone, combat area
(classification) military, armed forces, armed services, military machine, war machine

n. theater, playhouse; stage

(n.)
That which resembles a theater in form, use, or the like; a place rising by steps or gradations, like the seats of a theater.
  

(n.)
Any room adapted to the exhibition of any performances before an assembly, as public lectures, scholastic exercises, anatomical demonstrations, surgical operations, etc.
  

(n.)
An edifice in which dramatic performances or spectacles are exhibited for the amusement of spectators; anciently uncovered, except the stage, but in modern times roofed.
  

(n.)
A sphere or scheme of operation.
  

(n.)
A place or region where great events are enacted; as, the theater of war.