Language processing in the brain is when your brain takes in the words you hear and turns them into meaningful thoughts and ideas. It's like a kind of super-fast decoding machine that works in your head. When you hear someone speak, your brain recognizes the words, pieces them together, and helps you understand what the person is saying. It also helps you figure out how you want to respond. If your brain couldn't do this, you wouldn't be able to understand what people are saying and you wouldn't be able to carry on conversations.