next door
ˌnext ˈdoor1 
adverb
1. in the house, room etc next to yours or someone else’s:
the boy next door
Her office is just next door.
2. next door to something next to another building, room etc:
They live next door to the shop.
next door2 noun [uncountable] British English informal
the people living in the house or apartment next to yours
SYN neighbour:
Have you seen next door’s new car?
| I |
adverb1. in the house, room etc next to yours or someone else’s:
2. next door to something next to another building, room etc:
| II |
noun [uncountable] British English informalthe people living in the house or apartment next to yours
SYN neighbour: