Wiktionary
n. A windowed, street-facing compartment in which a selection of a store's merchandise is displayed.
WordNet
n. a setting in which something can be displayed to best effect; "it was a showcase for democracy in Africa" [syn: showcase]
a window of a store facing onto the street; used to display merchandise for sale in the store [syn: display window, shopwindow]
Usage examples of "show window".
Moreover, with Christmas hardly a week away, the quaint little perfume-bottle nativity scene that had graced Madame Devalier's show window every December for as long as Priscilla could remember was nowhere in sight.
The furniture was bland, dull, pastel, straight out of a foam rubber store's show window, but quietly and discreetly and tastefully expensive.
But a sudden memory of a huge show window full of marching mannequins came to his rescue.
In the back I found Danny Dreenan on his hands and knees inside a show window.
The building across the street was of brick, many stories high, the first floor being occupied by a used-car show window.