English to English
1. a building where theatrical performances or motion-picture shows can be presented
the house was full
2. the art of writing and producing plays
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
4. 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.