slipcover definition: a removable, fitted cloth cover for an armchair, sofa, etc.transitive verb -Â·covÂ·ered, -Â·covÂ·erÂ·ing to cover (a chair, etc.) with a slipcover... Definitions
Upper and middle back pain may be caused by: 1  Overuse, muscle strain, or injury to the muscles, ligaments, and discs that support your spine. 2  Poor posture. 3  Pressure on the spinal nervesspinal nerves from certain problems, such as a herniated disc.  A fracture of one of the vertebrae.
Back strain is the most common cause of back pain, especially lower back pain. Muscle strain is often caused by overuse of a muscle or overloading a muscle. When a muscle is stressed beyond its limits, injury occurs. With injury comes inflammation, which is part of the healing process.