1. Father's younger brother: This is the most common meaning of "babai" and translates directly to "uncle" in English. It refers to the younger brother of one's father.
2. Brother-in-law: In some regions of Andhra Pradesh, "babai" can also refer to one's brother-in-law, particularly the husband of one's sister. However, this usage is less common than the first meaning.
It's important to note that the specific meaning of "babai" can vary depending on the region and family traditions. It's always helpful to consider the context in which the word is used to understand its intended meaning.