From The Collaborative International Dictionary of English v.0.48 [gcide]:
Aisle \Aisle\, noun [OF. ele, F. aile, wing, wing of a building, L. ala, contr. fr. axilla.] (Arch.) (a) 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. (b) Improperly used also for the have; -- as in the phrases, a church with three aisles, the middle aisle. (c) Also (perhaps from confusion with alley), a passage into which the pews of a church open.
From WordNet (r) 3.0 (2006) [wn]:
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