gallery

noun (plural galleries)

• 1a room or building for the display or sale of works of art: an art gallery the National Gallery
• a collection of pictures: an extensive gallery of colour photographs

• 2a balcony or upper floor projecting from an interior back or side wall of a hall or church, providing space for an audience or musicians: in the minstrels' gallery, a string orchestra plays themes from film soundtracks
• (the gallery) the highest balcony in a theatre, containing the cheapest seats.
• a group of spectators, especially those at a golf tournament: he lashed a two-iron on to the green, bringing gasps from the gallery

• 3a long room or passage, typically one that is partly open at the side to form a portico or colonnade.
• a horizontal underground passage, especially in a mine: long underground galleries of 3 km or more made it possible to mine under the sea