Definitions of doctor:

• noun:   children take the roles of doctor or patient or nurse and pretend they are at the doctor's office

  Example: "The children explored each other's bodies by playing the game of doctor"

• noun:   a licensed medical practitioner

  Example: "I felt so bad I went to see my doctor"

• noun:   a person who holds Ph.D. degree from an academic institution

  Example: "She is a doctor of philosophy in physics"

• noun:   (Roman Catholic Church) a title conferred on 33 saints who distinguished themselves through the othodoxy of their theological teaching

  Example: "The Doctors of the Church greatly influenced Christian thought down to the late Middle Ages"

• verb:   give medical treatment to
• verb:   alter and make impure, as with the intention to deceive
• verb:   restore by replacing a part or putting together what is torn or broken
• name:  A surname (rare: 1 in 50000 families; popularity rank in the U.S.: #7489)