|spending in a lavish or ostentatious way, esp to impress others with one's wealth|
|the offspring of a zebra and a donkey.|
|a children's mummer's parade, as on the Fourth of July, with prizes for the best costumes.|
Buying unnecessary and expensive products and services as a way to show off wealth. The term was coined by U.S. economist Thorstein Veblen in The Theory of the Leisure Class.