Theat.
one of several metal boxes placed backstage in the floor (floor pocket) or wall of a theater and containing jacks for electric cables used in lighting units.
Theat.
one of several metal boxes placed backstage in the floor (floor pocket) or wall of a theater and containing jacks for electric cables used in lighting units.
Random House Webster's Unabridged English dictionary. Полный английский словарь Вебстер - Random House . 2012