An aisle is, in general, a space for walking with rows of seats on either side or with rows of seats on one side and a wall on the other.
Aisles can be seen in certain types of buildings such as churches, synagogues, meeting halls, parliaments and legislatures, courtrooms, theatres, and in certain types of passenger vehicles.
Aisles can also be seen in shops, warehouses, and factories, where rather than seats they have shelving to either side. In warehouses and factories aisles may consist of storage pallettes and in factories aisles may separate work areas. In health clubs, exercise equipment normally is arranged in aisles.
Aisles are distinguished from corridors. hallways, walkways, sidewalks (British pavement or footpath), trails, paths and (enclosed) "open areas".