Aisle

1. n. Also (perhaps from confusion with alley), a passage into which the pews of a church open.
2. 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.
3. n. Improperly used also for the have; — as in the phrases, a church with three aisles, the middle aisle.

The word meanings were obtained from OPTED(The Online Plain Text English Dictionary), which is based on “The Project Gutenberg Etext of Webster’s Unabridged Dictionary” which is in turn based on the 1913 US Webster’s Unabridged Dictionary (See Project Gutenburg), as a text file.