Balcony refers to a platform that projects from the wall of a building, typically enclosed by a railing or balustrade.
In architecture, a balcony can be:
1. A small outdoor space attached to an upper floor of a building
2. An interior balcony overlooking a large space like a lobby or theater
3. In theaters, the balcony refers to the upper level of seating
Fun fact: The word "balcony" comes from Italian "balcone", meaning "scaffold".