1.
1 : a roofed promenade : colonnade
2 : corridor sense 1
3 : an outdoor balcony
4 : porch, veranda
5 : a platform at the quarters or stern of a ship
6 : a long and narrow passage, apartment, or corridor
7 : a subterranean passageway in a cave or military mining system
8 : a working drift or level in mining
9 : an underground passage made by a mole or ant or a passage made in wood by an insect (such as a beetle)
10 : a room or building devoted to the exhibition of works of art
11 : an institution or business exhibiting or dealing in works of art
12 : collection, aggregation the rich gallery of characters in this novel— H. S. Canby
13 : a structure projecting from one or more interior walls (as of an auditorium or church) to accommodate additional people
14 : the highest balcony in a theater commonly having the cheapest seats
15 : the part of a theater audience seated in the top gallery
16 : the undiscriminating general public
17 : the spectators at a sporting event (such as a tennis or golf match)
18 : a small ornamental barrier or railing (as along the edge of a table or shelf)
19 : a photographer's studio
20 : a room or building in which people look at paintings, sculptures, etc.
21 : a business that sells paintings, sculptures, etc.
22 : a group or collection of people or things
23 : a long narrow room or hall
24 : an indoor structure (as in a theater or church) built out from one or more walls
25 : a room or building in which people look at works of art
26 : the highest balcony of seats in a theater or the people who sit there
27 : a passage (as in wood) made by an animal and especially an insect