The rear of the body, especially the part between the neck and the end of the spine and opposite the chest and belly. • The spine and associated tissues. • Large and attractive buttocks. • The part of a piece of clothing which covers the back. • The backrest, the part of a piece of furniture which receives the human back. • That part of the body that bears clothing. (Now used only in the phrase clothes on one's back.) • That which is farthest away from the front. • The side of any object which is opposite the front or useful side. • The edge of a book which is bound. • The inside margin of a page. • The side of a blade opposite the side used for cutting. • The reverse side; the side that is not normally seen. • Area behind, such as the backyard of a house or the rear storeroom of a retail store. • The part of something that goes last. • In some team sports, a position behind most players on the team. • The upper part of a natural object which is considered to resemble an animal’s back. • A support or resource in reserve. • The keel and keelson of a ship. • The roof of a horizontal underground passage. • Effort, usually physical. • A non-alcoholic drink (often water or a soft drink), to go with hard liquor or a cocktail. • Among leather dealers, one of the thickest and stoutest tanned hides. • Clipping of backstroke.