theatre

theatre
    n 1: a building where theatrical performances or motion-picture
         shows can be presented; "the house was full" [syn:
         {theater}, {theatre}, {house}]
    2: the art of writing and producing plays [syn: {dramaturgy},
       {dramatic art}, {dramatics}, {theater}, {theatre}]
    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" [syn: {field}, {field of
       operations}, {theater}, {theater of operations}, {theatre},
       {theatre of operations}]
    

Theater \The"a*ter\, Theatre \The"a*tre\, n. [F. th['e][^a]tre,
   L. theatrum, Gr. ?, fr. ? to see, view; cf. Skr. dhy[=a] to
   meditate, think. Cf. {Theory}.]
   1. 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.
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   2. Any room adapted to the exhibition of any performances
      before an assembly, as public lectures, scholastic
      exercises, anatomical demonstrations, surgical operations,
      etc.
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   3. That which resembles a theater in form, use, or the like;
      a place rising by steps or gradations, like the seats of a
      theater. --Burns.
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            Shade above shade, a woody theater
            Of stateliest view.                   --Milton.
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   4. A sphere or scheme of operation. [Obs.]
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            For if a man can be partaker of God's theater, he
            shall likewise be partaker of God's rest. --Bacon.
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   5. A place or region where great events are enacted; as, the
      theater of war.
      [1913 Webster] Theatin
    

Theatre
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.
    

22 Moby Thesaurus words for "theatre":
      acting, area, arena, auditorium, coliseum, drama, dramaturgy,
      hippodrome, histrionics, melodrama, opera house, performance,
      performing, playhouse, scene, setting, show business, stagecraft,
      staginess, the boards, the stage, theatrics