1.A teacher; one skilled in a profession, or branch of knowledge; a learned man. (Obs.) "One of the doctors of Italy, Nicholas Macciavel."
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.
3.One duly licensed to practice medicine; a member of the medical profession; a physician. "By medicine life may be prolonged, yet death Will seize the doctor too."
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.
5.(Zool.) The friar skate. (Prov. Eng.)
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