1. A line of counterthrusting arches
raised on columns or piers. Also see interlacing arcade, intersecting arcade. 2. A covered walk with a line of such arches along one or both long sides. 3. A covered walk with shops and offices along one side, and a line of such arches on the other. Also see stoa. 4. A covered walk, lit from the top, lined with shops or offices on one or more levels. -- The Illustrated Dictionary of Historic Architecture