A native tongue title means a name or title that you give yourself or someone else in your own language. It's like a special name that feels familiar and comfortable to say.
Let's say your name is Maria but your family and friends call you "Masha" because it's a cute nickname they have for you. "Masha" is your native tongue title because it's special to your culture and language.
Sometimes, people may also have native titles to indicate their status or position in a community. For example, a tribe leader may have a certain name or title that signifies their role as a leader.
So, a native tongue title is essentially a special name or title that is specific to a particular culture or language. It can be a nickname or a more formal title, and it helps to create a sense of belonging and identity within a community.