1no object To arrange and display goods attractively in a shop window.
2with object To arrange or present (something) in a way that creates a falsely favourable impression; specifically to manipulate (a balance sheet or portfolio) so as to suggest falsely a strong financial position. Also without object. intr.ompare "window dressing".
Late 19th century; earliest use found in The Liverpool Mercury. From window + dress, after window dresser and window dressing.