Theater {n} - theatre; theater  [Am.] 
Theater {pl}  - theatres; theaters  [Am.] ins Theater gehen  - to go to the theatre; to go to the theater  [Am.] beim Theater sein  - to be on the stage absurdes Theater  - theatre of the absurd ein Theater bespielen {vt}  - to use a theatre  [Br.]/theater  [Am.] for performances