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.
A calf strain injury usually occurs nearer the heel within the Achilles tendon due to sudden acceleration or deceleration. All muscle strains are categorized as either Grade I (tearing of a few muscle fibers), Grade II (more extensive muscle fiber damage) or Grade III (complete rupture of the muscle).