From Longman Dictionary of Contemporary Englishat the doorat the doorARRIVEif someone is at the door, they are waiting for you to open the door of a building so they can come inside There’s somebody at the front door. → door
Examples from the Corpus
at the door• Cover is $ 4 at the door.• Thanking her at the door, he asked who at the committee might know something and be willing to talk about it.• During my second evening at the hotel there was a knock at the door.• Debtors have difficult choices about whom to pay first; often they will pay the person at the door at the time.• The last thing he had expected was to find the police at the door.• I think there's somebody at the door.• I stood at the door and looked up, but the windows were dark; she had gone to bed.• When he turned at the door.• Jack was at the door almost as soon as Fogarty got himself off the sofa. 