What is the meaning of Box_set?

Related musical or video recordings that are gathered on multiple items of the same kind of media (compact discs, DVDs, VHS tapes, etc.) and placed in a box to be sold as a unit.

A set of such recordings made available to be watched or listened to online or on television, without existing in material box form.

A set of related books from a particular author or genre that are marketed as a boxed collection.

A set with a proscenium arch stage and three walls, creating the appearance of an enclosed room.

A set with three walls, allowing the camera to film in a room-like space.

Source: wiktionary.org