What is the history of the expression cat's meow?

The expression "cat's meow" originated in the 1920s during the Jazz Age in the United States, a time when slang was particularly popular. It was used to describe something that is considered Excellent or first-rate. The phrase likely gained traction alongside other idiomatic expressions of the time, reflecting a playful attitude toward language. The association with cats may stem from their graceful demeanor, suggesting something that stands out in a delightful way.