Definition of Cross aisle:
Retail: Any aisle which intersects with the main aisle at an angle, usually 90 degrees.
A transept of a church; (later also more generally) any aisle running transversely to the main axis of a building, hall, etc.
Architecture: An aisle in front of a seating section, such as in an arena or theater, which allows patrons to move to and from the entrance and exit aisles. In a church, it can refer to an aisle which intersects the main isle to form the shape of the cross.
Meaning of Cross aisle & Cross aisle Definition