First time knowing this word, so I googled.

Kodambakkam (also known as K-Town[1] or Kollywood) is a business and residential neighbourhood in Central Chennai, Tamil Nadu, India. The neighbourhood is served by Kodambakkam railway station of the Chennai Suburban Railway Network.

Kodambakkam has a high concentration of film studios and has been known for its status as the hub of the Tamil film industry, lending its name to the industry's monicker Kollywood.[2]