Theatre – teatro
(Pronounced tay-ah-troh)
To remember that theatre is pronounced tay-ah-troh (teatro) in Spanish, use the following mnemonic:
The theatre performance was tasteless and atrocious (teatro).

Teatro is masculine, so it's el teatro. Imagine an elephant performing at the theatre.

Examples of teatro (theatre) in a sentence
El teatro más famoso de Madrid es el Teatro Real.
(The most famous theatre in Madrid is the Royal Theatre.)
Me encanta ir al teatro los fines de semana.
(I love going to the theatre on weekends.)
Los actores ensayaron en el teatro durante tres horas.
(The actors rehearsed in the theatre for three hours.)