Longman Dictionary of Contemporary English
Wiktionary
alt. 1 The decorative display of retail merchandise in store windows 2 The goods and trimmings used in such display 3 (context idiomatic uncountable English) A means of creating a deceptively favourable impression of something or someone; something for appearance only. n. 1 The decorative display of retail merchandise in store windows 2 The goods and trimmings used in such display 3 (context idiomatic uncountable English) A means of creating a deceptively favourable impression of something or someone; something for appearance only.
WordNet
n. a showy misrepresentation intended to conceal something unpleasant [syn: facade]
the decoration of shop windows
Usage examples of "window dressing".
Zane suspected her job was more window dressing than anything else, something to keep her busy.
The ritual is only window dressing, a smoke screen that the murderers hope will throw you off.
The several speakers who immediately followed Robert Turner were really just window dressing.
The motive must have been window dressing again, in case of a sudden end to the war.
Most of the small shops had been replaced by huge government stores stores that were empty, shelves bare, despite their fancy window dressing.
That it is one of the many pretended sciences which have been confused with true magic and used as a kind of window dressing.