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.
Causes. 1  Overuse: The most common cause of tendonitis is overuse, which means a tendon is overly stretched and possibly experiencing a small degree of pulling apart or tearing. This occurs when there is an increase in activity, which can include anything from walking to participating in competitive sports.