Definition of vendetta. 1  1 : blood feud. 2  2 : an often prolonged series of retaliatory, vengeful, or hostile acts or exchange of such acts waged a personal vendetta against those who opposed his nomination.
A strain is a twist, pull and/or tear of a muscle and/or tendon. Tendons are fibrous cords of tissue that attach muscles to bone. Strains and sprains are among the most common sports injuries.
Tendinitis is the inflammation of a tendon, the bands of strong connective tissue that attach muscle to bone, which are often due to a repetitive strain injury (RSI). The condition is common among athletes, manual laborers, and computer users that tend to overuse the tendons through repetitive motions.