arcade

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A series of arches supported by columns, piers, or pillars, either freestanding or attached to a wall to form a gallery.
• noun A series of arches employed for decorative purposes.
• noun A roofed passageway or lane, especially one with shops on one or both sides.
• noun A commercial establishment featuring an array of large mechanical or electronic games, such as pinball machines or video games, that charge players money before each game.
• transitive verb To provide with or form into an arcade.

from The Century Dictionary.

• noun Properly, a series of arches supported on piers or pillars.
• noun A simple arched opening in a wall.
• noun A vault or vaulted place.
• noun Specifically, in some cities, a long arched passageway; a covered avenue, especially one that is lined with shops.
• noun In anatomy and zoology, those portions of the cranium having an arch-like structure and running from the postero-external to the orbital region.

from the GNU version of the Collaborative International Dictionary of English.

• noun 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.
• noun A long, arched building or gallery.
• noun An arched or covered passageway or avenue.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun architecture A row of arches.
• noun architecture A covered passage, usually with shops on both sides.
• noun gaming An establishment that runs coin-operated games.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun a covered passageway with shops and stalls on either side
• noun a structure composed of a series of arches supported by columns