What does GALLERY mean?

noun

1. spectators at a golf or tennis match
2. a porch along the outside of a building (sometimes partly enclosed)
3. a room or series of rooms where works of art are exhibited
4. a long usually narrow room used for some specific purpose“shooting gallery”
5. a covered corridor (especially one extending along the wall of a building and supported with arches or columns)
6. narrow recessed balcony area along an upper floor on the interior of a building; usually marked by a colonnade
7. a horizontal (or nearly horizontal) passageway in a mine“they dug a drift parallel with the vein”