Patimokkha is basically a set of rules that Buddhist monks and nuns follow. It's like a big list of things they can and can't do, kind of like how parents give kids rules to follow so they don't get into trouble.
The patimokkha has over 200 rules, and they cover all sorts of things like not stealing, not lying, and not hurting others. It also has rules for things like how to use the bathroom, how to eat, and how to behave when traveling.
The idea behind patimokkha is that by following these rules, the monks and nuns can become closer to enlightenment and develop a deeper understanding of Buddhism. It's kind of like a way to challenge themselves and to show dedication to their spiritual practice.
Overall, patimokkha is a set of rules that helps Buddhist monks and nuns live a disciplined and moral life. It's like a code of conduct that they follow, and it helps them on their journey towards enlightenment.