What is the meaning of Theatre?

Alternative spelling of theater.

A cinema; movie theatre.

alternative form of theater

theater (a place or building, consisting of a stage and seating, in which an audience gathers to watch plays, musical performances, public ceremonies, and so on)

alternative spelling of teatre

theater (a place or building, consisting of a stage and seating, in which an audience gathers to watch plays, musical performances, public ceremonies, and so on)

Source: wiktionary.org