Gallery (noun)

1. A room, series of rooms, or building devoted to the exhibition and often the sale of works of art.
2. A room in a church for the seating of the laity, especially in the Middle Ages.
3. A long, narrow balcony or platform that runs along the side of a building and is used for a specific purpose, such as a walkway or an area for viewing a performance.
4. A viewing room in a museum or art collection.
5. A collection of art or other items on display in a public or private place.

Origin:

Middle english galerie, from old french, from medieval latin galeria, from latin, galley; from the upper deck of a ship, from galley.

Examples:

1. I visited the gallery to see the new exhibition.
2. The gallery was filled with beautiful paintings.
3. The gallery had a balcony that ran along the side of the building.
4. The museum has a special gallery for ancient artifacts.
5. The private gallery had a collection of rare stamps.