This is the 6137th most frequent Spanish word.
alí
"Alí" is a proper noun, often used as a name, equivalent to "Ali" in English.
In this context, 'Alí' is a proper noun, specifically a name, referring to a character in a novel.
Alí es un personaje interesante de esta novela.
Ali is an interesting character in this novel.
Here, 'Alí' functions as a direct object of the verb 'vi' (I saw) and represents a person by their name.
Vi a Alí en el mercado comprando frutas.
I saw Ali in the market buying fruits.
In this usage, 'Alí' is the subject of the sentence and indicates the person acting in the situation described.