Birthright means that just by being born into a certain group, like a family or a country, you automatically get certain things that other people don't get. For example, if you are born in America, you automatically get to be an American citizen, and you can do things like vote and get a passport to travel to many other countries. Birthright can also refer to things like inheriting property or being able to use certain resources that are only available to people who were born into a particular group. It's like a special gift that you get just for being born into the right family or place.