What does arcade mean?
The definition of arcade
Ar*cade”, n.
Etym: [F. arcade, Sp. arcada, LL. arcata, fr. L. arcus bow, arch.]

1 (Arch.)

(a) A series of arches with the columns or piers which support them, the spandrels above, and other necessary appurtenances; sometimes open, serving as an entrance or to give light; sometimes closed at the back (as in the cut) and forming a decorative feature.
(b) A long, arched building or gallery.

2 An arched or covered passageway or avenue.