gallery

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A roofed promenade, especially one extending along the wall of a building and supported by arches or columns on the outer side.
• noun A long enclosed passage, such as a hallway or corridor.
• noun A narrow balcony, usually having a railing or balustrade, along the outside of a building.
• noun A projecting or recessed passageway along an upper story on the interior or exterior of a large building, generally marked by a colonnade or arcade.
• noun Such a passageway situated over the aisle of a church and opening onto the nave.
• noun An upper section, often with a sloping floor, projecting from the rear or side walls of a theater or an auditorium to provide additional seating.
• noun The seats in such a section, usually cheaper than those on the main floor.
• noun The cheapest seats in a theater, generally those of the uppermost gallery.
• noun The audience occupying a gallery or cheap section of a theater.
• noun A large audience or group of spectators, as at a tennis or golf match.
• noun The general public, usually considered as exemplifying a lack of discrimination or sophistication.
• noun A building, room, or website for the exhibition of artistic work.
• noun An establishment that displays and sells works of art.
• noun A photographer's studio.
• noun A collection; an assortment.
• noun An underground tunnel or passageway, as in a cave or one dug for military or mining purposes.
• noun A tunnel or series of tunnels made by an animal.
• noun Nautical A platform or balcony at the stern or quarters of some early sailing ships.
• noun A decorative upright trimming or molding along the edge of a table top, tray, or shelf.

from The Century Dictionary.

• noun By extension, any company or group of interested spectators, as at a golf-match: a forced use.
• noun Specifically, in écarté, spectators who are betting on either player and are allowed to offer suggestions.
• noun A veranda; a piazza.
• noun In a lamp-burner, the ring which supports the lamp-shade.
• noun An apartment of much greater length than breadth, serving as a passage of communication between the different rooms of a building, or used for the reception of pictures, statues, armor, etc.; a corridor; a passage.
• noun Hence A room or building for the exhibition of works of art, or, by extension, a collection of such works for exhibition.
• noun A platform projecting from the interior walls of a building, supported by piers, pillars, brackets, or consoles, and overlooking the main floor, as in a church, theater, or public library.
• noun A narrow passage, open at least on one side, and often treated as a decorative feature, on the exterior or interior walls of an edifice, entering into the architectural design and at the same time affording communication between different parts, or facilities for keeping the building in repair.
• noun The persons occupying the gallery at a theater.
• noun An ornamental walk or inclosure in a garden, sometimes formed by trees or shrubs.
• noun An underground passage.
• noun In zoology, a long narrow excavation of any kind made by an animal, as the underground passages dug by a mole, the boring of an insect, etc.
• noun Nautical, a frame like a balcony projecting from the stern and quarters of a ship. The part at the stern is called the stern-gallery, that at the quarters the quarter-gallery.
• noun In furniture-making, a small ornamental parapet or railing running along the edge of the top of a table, shelf of a cabinet, or the like, intended to prevent objects from being pushed off.

from the GNU version of the Collaborative International Dictionary of English.

• noun A long and narrow corridor, or place for walking; a connecting passageway, as between one room and another; also, a long hole or passage excavated by a boring or burrowing animal.
• noun A room for the exhibition of works of art; ; hence, also, a large or important collection of paintings, sculptures, etc.
• noun A long and narrow platform attached to one or more sides of public hall or the interior of a church, and supported by brackets or columns; -- sometimes intended to be occupied by musicians or spectators, sometimes designed merely to increase the capacity of the hall.
• noun (Naut.) A frame, like a balcony, projecting from the stern or quarter of a ship, and hence called stern gallery or quarter gallery, -- seldom found in vessels built since 1850.
• noun (Fort.) Any communication which is covered overhead as well as at the sides. When prepared for defense, it is a defensive gallery.
• noun (Mining) A working drift or level.
• noun See under Whispering.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun An institution, building, or room for the exhibition and conservation of works of art.
• noun An establishment that buys, sells, and displays works of art.
• noun Uppermost seating area projecting from the rear or side walls of a theater, concert hall, or auditorium.
• noun A roofed promenade, especially one extending along the wall of a building and supported by arches or columns on the outer side
• noun as a whole, the spectators of an event.