gallery; upper gallery; cheap seats; nosebleed section; the gods
Refers to the highest, cheapest seating area in a theatre, farthest from the stage. The English glosses vary by region and register; 'the gods' is chiefly British and somewhat dated.
天井桟敷から舞台を見下ろすと、役者がとても小さく見える。
Looking down at the stage from the gallery, the actors look very small.
学生の頃はいつも天井桟敷で芝居を観ていた。
When I was a student, I always watched plays from the cheap seats.