Learner's definition of US
1 — used to refer to the speaker and another person or group of people as the indirect object or direct object of a verb
It was nice of you to invite us.
It's fine with us if you want to bring a friend.
There's nobody in here but us kids.
Someone please help us!
It's just the two of us for dinner.
They told us it would be a few minutes, so why don't we all wait outside?
All of us [=we all] will be affected by these changes.
It's an exciting time for all of us.