1. A place renowned for its frivolous activity.
2. A state of mind characterized by unrealistic expectations or a lack of seriousness.

[After L(OS) A(NGELES).]

The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.