Meaning of “before” - Learner’s Dictionary

before

adverb us uk /bɪˈfɔːr/
Extra Examples
He hasn't visited London before.I had met his wife before.I've never seen a fish that big before.I've never done this before.Had you met her before?

A2 at an earlier time, or on a previous occasion:

I've never seen her before.
We had spoken on the phone a few days before.

(Definition of “before adverb” from the Cambridge Learner’s Dictionary © Cambridge University Press)