Joining to; contiguous; adjacent; as, an adjoining room.

Touching or bounding at a point or along a line.

having a common boundary or edge; touching; "abutting lots"; "adjoining rooms"; "Rhode Island has two bordering states; Massachusetts and Conncecticut"; "the side of Germany conterminous with France"; "Utah and the contiguous state of Idaho"; "neighboring cities"

In actual contact with another object (i.e. attached).