theatre

n. (us theater) 1 building or outdoor area for dramatic performances. 2 writing and production of plays. 3 room or hall for lectures etc. With seats in tiers. 4 operating theatre. 5 a scene or field of action (the theatre of war). B (attrib.) Designating weapons intermediate between tactical and strategic. [greek theatron]

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.