1.
If you go ~ in a building, you go up a staircase towards a higher floor.
He went ~ and changed into fresh clothes...
? downstairs
ADV: ADV after v
2.
If something or someone is ~ in a building, they are on a floor that is higher than the ground floor.
The restaurant is ~ and consists of a large, open room...
The boys are curled asleep in the small bedroom ~.
? downstairs
ADV: be ADV, n ADV
3.
An ~ room or object is situated on a floor of a building that is higher than the ground floor.
Marsani moved into the ~ apartment.
...an ~ balcony.
ADJ: ADJ n
4.
The ~ of a building is the floor or floors that are higher than the ground floor.
Frances invited them to occupy the ~ of her home.
? downstairs
N-SING: the N