next door

next door

adv

Definition of NEXT DOOR

: in or to the next building, house, apartment, or room <lives next door>; broadly : in or at an adjacent place

— next door to

: next to

Examples of NEXT DOOR

1. He bought the house next door.
2. I'll be staying in the room next door.
3. Canada is right next door to the U.S.

First Known Use of NEXT DOOR

1579