adjacent

adjective1 of 3

being close or near to a border, wall, or point

• “Check this room while I check the adjacent one.”Tatoeba
• “My home town is adjacent to the ocean.”Tatoeba

Sentences from Tatoeba show real usage. A word can have several meanings, so a sentence may use another one.

noun2 of 3

Something that lies next to something else, especially the side of a right triangle that is neither the hypotenuse nor the opposite.

preposition3 of 3

Next to; beside.