Definition of: doctor

(dok′tər) noun
1. A qualified practitioner of medicine or surgery in any of its branches.
2. A person who has received a diploma of the highest degree in a faculty, as of divinity, law, literature, etc.
3. Mech. A device in a machine, for doing some special work; specifically, an auxiliary or donkey engine.
4. A long knife for distributing and removing color on a printing roller.
5. A steel edge on a calender roll to scrape off dirt.
6. On sailing vessels, the steward or the cook.
7. Colloq. The cook in a logging camp or on shipboard.
8. Among primitive people, a medicine man, wizard, or conjurer.
9. Any of several varieties of brightly colored, artificial flies, used for fishing.
10. Obs. A person of great learning qualified to instruct.
—v.t. Colloq.
1. To prescribe for or treat medicinally.
2. To repair.
3. To alter; falsify, as evidence.
—v.i. Colloq.
4. To practice medicine.
5. To take medicine or undergo medicinal treatment. [<L, a teacher <docere teach]
—doc′tor·al adjective