A theater — a place where plays or films are presented; can also refer to the performances themselves. Used as a katakana loanword for venues or small cinemas.
駅前に新しいシアターがオープンした。
A new theater opened in front of the station.
このミュージカルは市民シアターで来月から上演される。
This musical will be performed at the civic theater starting next month.
休日は小さなミニシアターで外国映画を観るのが好きだ。
On holidays I like watching foreign films at a small arthouse theater.