What is the meaning of the phrase to be in the know?

The phrase "to be in the know" means to be aware of or have information about something that is not publicly known. It is often used to express that someone has insider knowledge or is privy to a secret.

For example, "He was in the know about the company's financial problems."

The phrase can also be used to express that someone is aware of a situation or event that is not widely known. For example, "The news of the accident was in the know a few days ago."