Arcade \Ar*cade"\, n. [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.

Source: Webster's Revised Unabridged Dictionary (1913)