Doctor fish

Surgeon \Sur"geon\, n. [OE. surgien, OF. surgien, contr. fr.
   chirurgien. See {Chirurgeon}.]
   1. 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.
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   2. (Zool.) 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}.
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   {Surgeon apothecary}, one who unites the practice of surgery
      with that of the apothecary. --Dunglison.

   {Surgeon dentist}, a dental surgeon; a dentist.

   {Surgeon fish}. See def. 2, above.

   {Surgeon general}.
      (a) In the United States army, the chief of the medical
          department.
      (b) In the British army, a surgeon ranking next below the
          chief of the medical department.
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doctor \doc"tor\, n. [OF. doctur, L. doctor, teacher, fr. docere
   to teach. See {Docile}.]
   1. A teacher; one skilled in a profession, or branch of
      knowledge; a learned man. [Obs.]
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            One of the doctors of Italy, Nicholas Macciavel. --
                                                  Bacon.
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   2. An academical title, originally meaning a man so well
      versed in his department as to be qualified to teach it.
      Hence: One who has taken the highest degree conferred by a
      university or college, or has received a diploma of the
      highest degree; as, a doctor of divinity, of law, of
      medicine, of music, or of philosophy. Such diplomas may
      confer an honorary title only.
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   3. One duly licensed to practice medicine; a member of the
      medical profession; a physician.
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            By medicine life may be prolonged, yet death
            Will seize the doctor too.            -- Shak.
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   4. Any mechanical contrivance intended to remedy a difficulty
      or serve some purpose in an exigency; as, the doctor of a
      calico-printing machine, which is a knife to remove
      superfluous coloring matter; the doctor, or auxiliary
      engine, called also {donkey engine}.
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   5. (Zool.) The friar skate. [Prov. Eng.]
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   {Doctors' Commons}. See under {Commons}.

   {Doctor's stuff}, physic, medicine. --G. Eliot.

   {Doctor fish} (Zool.), any fish of the genus {Acanthurus};
      the surgeon fish; -- so called from a sharp lancetlike
      spine on each side of the tail. Also called {barber fish}.
      See {Surgeon fish}.
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