A large window at the front of a shop, behind which items for sale are displayed.
1985, Rodger Bradley, Amtrak: The US National Railroad Passenger Corporation, Blandford Press, page 168:
The enthusiasm with which the private industry has treated the high speed rail concept can do the Corporation some good, and maybe even encourage the completion of the originally proposed electrification from New Haven to Boston. It will then have a high speed 'shop window', comparable with any in the world.
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