aisle 
(īl)
(īl)n.
1. A part of a church divided laterally from the nave, transept, or choir by a row of columns.
2. A passageway between rows of seats, as in an auditorium or an airplane.
3. A passageway for inside traffic, as in a department store, warehouse, or supermarket.
[Alteration (influenced by ISLE and French aile, wing) of Middle English ele, from Old French, wing of a building, from Latin āla.]