In human beings, the hinder part of the body, extending from the neck to the end of the spine; in other animals, that part of the body which corresponds most nearly to such part of a human being; as, the back of a horse, fish, or lobster.

The part opposed to the front; the hinder or rear part of a thing; as, the back of a book; the back of an army; the back of a chimney.

Being at the back or in the rear; distant; remote; as, the back door; back settlements.

In, to, or toward, the rear; as, to stand back; to step back.

syn. Rear, q.v.

the part of something that is furthest from the normal viewer; "he stood at the back of the stage"; "it was hidden in the rear of the store"

located at or near the back of an animal; "back (or hind) legs"; "the hinder part of a carcass"

at or to or toward the back or rear; "he moved back"; "tripped when he stepped backward"; "she looked rearward out the window of the car"

Rear board and end of the book

1. The part or surface behind the front; the rear. 2. See Steel Square. 3. The back surface of gypsum board; the opposite side from the face; usually the side that would be concealed or the side in contact with the framing; also referred to as the Code Side.