The surgical removal of all or part of a clavicle which is the bone extending from the breastbone (sternum) at the base of the front of the neck to the shoulder: "A claviculectomy may be performed in some cases of thyroid cancer or other tumors, osteomyelitis of the clavicle, or when there is a limitation of arm movements where the shoulder joint has become fused together."

Clavical is a misspelling of clavicle.