noun / verb
doctor
DAHK-ter/ˈdɑːktər/
A professional who treats illness or injury.
The doctor listens to the seated patient's chest with a stethoscope.

Etymology
Doctor literally meant a teacher. Through its use as a title for advanced scholars and people skilled in learned professions, it developed the medical sense of someone qualified to practice medicine.
In context
he infiltrated hospitals posing as a doctor and dangerously administered treatments
More examples
- You should see a doctor about that persistent cough.
- Two doctors examine her injured knee.
- Our family doctor explains how to take the medicine.
- She doctors up the canned soup with fresh herbs.
Forms
doctor · doctors · doctored · doctoring