theater

theater (US) noun
or chiefly British theatre /ˈθijətɚ/
plural theaters
theater (US)
noun
or chiefly British theatre /ˈθijətɚ/
plural theaters
Britannica Dictionary definition of THEATER
1 
[count]
a  : a building where plays, shows, etc., are performed on a stage
— see also dinner theater
b  US : a building or room in which movies are shown
2 
[noncount]
a  : plays in general or as a form of entertainment
b  : the art or activity of performing in or producing plays on a stage
— see also community theater
3 
[count]
a  : a place where important events or actions occur — usually singular
b  : a large area where there is a war
4 
[count] British : operating room