The Collaborative International Dictionary of English v.0.48:

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.
          [1913 Webster]

   2. An arched or covered passageway or avenue.
      [1913 Webster]

U.S. Gazetteer (1990):

Arcade, GA (city, FIPS 2648)
  Location: 34.07687 N, 83.56098 W
  Population (1990): 697 (266 housing units)
  Area: 8.7 sq km (land), 0.0 sq km (water)
Arcade, NY (village, FIPS 2407)
  Location: 42.53343 N, 78.43316 W
  Population (1990): 2081 (817 housing units)
  Area: 6.5 sq km (land), 0.0 sq km (water)
  Zip code(s): 14009

Moby Thesaurus II by Grady Ward, 1.0:

74 Moby Thesaurus words for "arcade":
   access, aisle, alley, ambulatory, aperture, apse, arcature, arch,
   arched roof, archway, areaway, artery, atlas, avenue, breezeway,
   camber, caryatid, ceilinged roof, channel, cloister, colonnade,
   colonnette, column, communication, concameration, concha, conduit,
   connection, corridor, cove, covered way, cupola, defile, dome,
   exit, ferry, ford, gallery, geodesic dome, hall, hallway, igloo,
   inlet, interchange, intersection, junction, keystone, lane, loggia,
   ogive, opening, outlet, overpass, pass, passage, passageway,
   pergola, peristyle, pier, pilaster, pillar, portico, post,
   railroad tunnel, skewback, span, telamon, traject, trajet, tunnel,
   underpass, vault, vaulting, voussoir