* Father: This is the most common meaning of "baba" in Chaldean, similar to how it is used in other languages like Arabic and Hebrew.
* Grandfather: In some contexts, "baba" can also refer to a grandfather, especially if there's a clear distinction needed from the "father" meaning.
* Old man: More generally, "baba" can be used to address an elderly male, similar to the English "old man".
Therefore, without more context, "baba" in Chaldean can be interpreted as father, grandfather, or an elderly male.
To understand the intended meaning, you need to look at the specific situation and the way the word is used within the sentence or conversation.