1. Pronoun:
* "That one" (masculine): This is the most common meaning. It refers to a specific masculine noun that's already been mentioned or is clearly visible.
* Example: "Mira ese gato! (Look at that cat!)"
2. Informal term of address:
* "Dude" or "Man": It's a familiar and informal way to address a male friend or acquaintance.
* Example: "Ese, ¿qué tal? (Dude, how are you?)"
3. Adjective:
* "That": This is used to describe something that's already been mentioned or is visible. It can be used with masculine nouns or with "uno" (one) to make it clear you're referring to a singular object.
* Example: "Ese libro es interesante. (That book is interesting.)"
* Example: "Ese uno es para ti. (That one is for you.)"
The best way to understand what "ese" means in a specific sentence is to look at the context and the other words around it.