A laboratory is like a big room where scientists and other people who want to learn about science can go to do experiments and learn new things. It's kind of like a classroom, but instead of just learning about something, people get to do experiments and see what happens.
In a laboratory, scientists use special tools and equipment to help them do their experiments. They might use microscopes to look at things that are too small to see with their eyes, or they might use chemicals to mix together and see what happens. They might even use computers to help them analyze data and make graphs.
Lab safety is very important in a laboratory. Scientists wear special clothes like lab coats and safety goggles to protect their skin and eyes from dangerous chemicals or things that might hurt them. They also follow rules like not eating or drinking while in the lab to make sure they stay safe while they work.
Overall, laboratories are really cool places where people can learn a lot about science and try out new ideas in a safe environment.