surgeon

n. one who practices surgery, one who performs medical operations (Medicine)

In medicine, a surgeon is a person who performs surgery. Surgery is a broad category of invasive medical treatment that involves cutting of a body, whether human or other organism. Surgeons may be physicians, dentists, or veterinarians who specialize in surgery.
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n. sucker (Botany)

(n.)
One whose profession or occupation is to cure diseases or injuries of the body by manual operation; one whose occupation is to cure local injuries or disorders (such as wounds, dislocations, tumors, etc.), whether by manual operation, or by medication and constitutional treatment.
  

(n.)
Any one of numerous species of chaetodont fishes of the family Teuthidae, or Acanthuridae, which have one or two sharp lancelike spines on each side of the base of the tail. Called also surgeon fish, doctor fish, lancet fish, and sea surgeon.
  

A doctor who removes or repairs a part of the body by operating on the patient.