1. a walkway between or along sections of seats in a theater, classroom, or the like.
2. Architecture. a longitudinal division of an interior area, as in a church, separated from the main area by an arcade or the like. any of the longitudinal divisions of a church or the like. Idioms
3. in the aisles, (of an audience) convulsed with laughter.
"aircraft can be aisle."
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