Specific language impairment means that some children have difficulty understanding or using language, even though they have no hearing problems or other developmental disability. It's like having a problem with the "language button" in your brain.
For example, sometimes when people talk to you, you might have trouble understanding what they are saying. You might have to ask them to repeat themselves a few times, or maybe you just nod your head and pretend like you understand. Or, when you try to talk, it might be hard to find the right words or to say them in the right order.
When someone has specific language impairment, they might have one or both of these problems. They might have trouble understanding what people say to them, or they might have trouble expressing themselves. These problems can make it hard for them to communicate with other people, which can make things like school, making friends, and fitting in more difficult.
However, with help from parents, teachers, and speech therapists, children with specific language impairment can learn to improve their language skills and communicate more effectively.