Aisle

n. passage, walkway (between rows of seats)

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.
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Noun
1. a long narrow passage (as in a cave or woods)
(hypernym) passage
2. passageway between seating areas as in an auditorium or passenger vehicle or between areas of shelves of goods as in stores
(synonym) gangway
(hypernym) passageway
3. part of a church divided laterally from the nave proper by rows of pillars or columns
(hypernym) area

v. sequester, separate; isolate, seclude; insulate

(n.)
Improperly used also for the have; -- as in the phrases, a church with three aisles, the middle aisle.
  

(n.)
Also (perhaps from confusion with alley), a passage into which the pews of a church open.
  

(n.)
A lateral division of a building, separated from the middle part, called the nave, by a row of columns or piers, which support the roof or an upper wall containing windows, called the clearstory wall.