"back" as noun
1 - The rear of the body, especially the part between the neck and the end of the spine and opposite the chest and belly.
2 - That which is farthest away from the front.
3 - Upper part of a natural object which is considered to resemble an animal's back.
"back" as verb
1 - To go in the reverse direction.
2 - To support.
3 - (of the wind) To change direction contrary to the normal pattern; that is, to shift anticlockwise in the northern hemisphere, or clockwise in the southern hemisphere.
"back" as adjective
1 - Near the rear.
2 - Not current.
3 - Far from the main area.
"back" as adverb
1 - To or in a previous condition or place.
2 - Away from the front or from an edge.
3 - In a manner that impedes.
