adjective
Lying next to, close, or contiguous; neighboring; bordering on.
Just before, after, or facing.
(figuratively, postpositive) Related to; suggestive of; bordering on.
noun
Something that lies next to something else, especially the side of a right triangle that is neither the hypotenuse nor the opposite.
preposition
Next to; beside.
(figuratively) Related to; suggestive of; bordering on.