[aisle] n [ME ile, alter. of ele, fr. MF, wing, fr. L ala; akin to OE eaxl shoulder, L axis axletree--more at axis] (15c) 1: the side of a church nave separated by piers from the nave proper
2. a: a passage (as in a theater or railroad passenger car) separating sections of seats b: a passage (as in a store or warehouse) for inside traffic