that

/ðæt/, /ðət/ pronoun, adj [not gradable] (plural those /ðoʊz/) (SOMETHING NOT HERE)

Definition

› used to refer to a person, object, event, etc., separated from the speaker by distance or time, or to something that has been referred to before, or to point to a particular thing: This peach isn’t ripe – can I have that one (= the one farther away) on the table? Put that box (= the particular box referred to) down before you drop it. Where’s that pen (= the one I was using earlier)? If she could play like that (= the way she is now playing) every day, she’d be a star. She called him an imbecile, and at that (= immediately after that) he stormed out of the room. › That is also used to make a connection with an earlier statement: My usual train was canceled. That’s why I’m late. I didn’t know she’d been so ill. That’s terrible. that is › You say that is when you want to give further details or be more exact about something: I should be there by seven, that is, unless there’s a lot of traffic.

(Definition of that pronoun, adj (SOMETHING NOT HERE) from the Cambridge Academic Content Dictionary © Cambridge University Press)