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 is inflammation of a tendon, which is where a muscle connects to a bone. This is probably the biggest complaint that athletes have in regards to injuries. It is also one of the most used diagnoses, and perhaps sometimes incorrectly.