What is the Hindi meaning of kolavery?

"Kolaveri" is a Tamil word, not Hindi. It is a slang word that roughly translates to "nonsense" or "gibberish".

However, it gained popularity in Hindi-speaking regions through the viral song "Kolaveri Di" by Dhanush.

While the song doesn't actually *mean* anything in Hindi, it became a popular phrase and even entered the Oxford English Dictionary.