Doctor

1. The friar skate.
2. To tamper with and arrange for one's own purposes; to falsify; to adulterate; as, to doctor election returns; to doctor whisky.
3. A teacher; one skilled in a profession, or branch of knowledge learned man.
4. To treat as a physician does; to apply remedies to; to repair; as, to doctor a sick man or a broken cart.
5. 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.
6. To confer a doctorate upon; to make a doctor.
7. An academical title, originally meaning a men 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.
8. To practice physic.
9. One duly licensed to practice medicine; a member of the medical profession; a physician.