Okay kiddo, "rom baro" is a term in the language of the Romani people. The Romani people are a group of people who have their own language and culture, and they spread out all over the world. "Rom baro" means "big man" or "big person" in their language.
Now, when they say "big man", they don't just mean someone who is physically big. They mean someone who has a lot of power and influence over other people. It's like if you're playing a game with your friends and one of them is the leader who makes all the decisions. That person might be called the "big man" or "big person" of the group.
So, when you hear someone say "rom baro", they're talking about a person who is a very important and powerful leader in the Romani community. It could be someone who has a lot of money, or someone who has a lot of respect and authority among their people.
I hope that helps you understand what "rom baro" means!