1. (n.) 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.

2. (n.) A room for the exhibition of works of art; as, a picture gallery; hence, also, a large or important collection of paintings, sculptures, etc.

3. (n.) 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.

4. (n.) 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.

5. (a.) Any communication which is covered overhead as well as at the sides. When prepared for defense, it is a defensive gallery.

6. (n.) A working drift or level.

British Museum Guggenheim Museum Hermitage Louvre Metropolitan Museum National Gallery Prado Rijksmuseum Tate Gallery Texas tower Uffizi abri access aisle alley ambulatory amphitheater aperture approach trench arcade areaway arena art gallery artery assembly hall atelier audience auditorium auditory avenue balcony band beacon bed bedding belt belvedere bleachers box box seat breezeway bridge bunker catafalque channel chapel cloister colonnade communication communication trench concert hall conduit congregation connection conning tower convention hall corridor couche countermine coupure course covered way curatorship dais dance hall deck defile display room ditch double sap dress circle dugout emplacement entrenchment estrade exhibition hall exhibition room exit fauteuil ferry fire trench floor flying sap ford fortified tunnel fosse foxhole gazebo grandstand groundling hall hallway heliport house hustings inlet interchange intersection junction lanai landing landing pad landing stage lane launching pad layer lecture hall ledge level lighthouse loge loggia lookout loophole measures meetinghouse mine moat museology museum music hall observation post observatory opening opera house orchestra orchestra circle outlet outlook overlayer overlook overpass overstory paradise parallel parquet parquet circle parterre pass passage passageway patio peanut gallery peephole pergola peristyle pharos piazza picture gallery pinacotheca pit platform podium porch portico proscenium boxes pulpit railroad tunnel ringside ringside seat rostrum salon sap seam shelf showroom sighthole sleeping porch slit trench soapbox solarium spectator stadium stage stall standing room step step terrace stoop story stratum studio stump substratum sun porch superstratum terrace theater theatre stall thickness tier top gallery topsoil tower traject trajet trench tribunal tribune tunnel underlayer underpass understory understratum veranda watchtower zone