"theatre" in the noun sense
1. theater, theatre, house
a building where theatrical performances or motion-picture shows can be presented
"the house was full"
2. dramaturgy, dramatic art, dramatics, theater, theatre
the art of writing and producing plays
3. field, field of operations, theater, theater of operations, theatre, theatre of operations
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"
Source: WordNet® (An amazing lexical database of English)
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