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.
Tendonitis, also spelled Tendinitis, is an inflammation or irritation of a tendon. Chronic strain, overuse or misuse of a tendon leading to a repetitive stress injury, or a serious acute injury can lead to a weakness, tear or swelling of the tendon tissue resulting in pain and stiffness near the tendon.