What does mi llano mean?

Answer 1

Translation: My plains / my grasslands

You are more likely looking for "me llamo" which means "my name is" (lit. I call myself).

Answer 2

"Mi llano" is a Spanish phrase that means "my plain" or "my prairie" in English. It is commonly used to refer to the vast grassland regions found in Venezuela and Colombia, characterized by flat terrain and rich biodiversity.