children take the roles of physician or patient or nurse and pretend they are at the physician's office; "the children explored each other's bodies by playing the game of doctor"
a licensed medical practitioner; "I felt so bad I went to see my doctor"
a person who holds Ph.D. degree (or the equivalent) from an academic institution; "she is a doctor of philosophy in physics"
the only surviving hominid; species to which modern man belongs; bipedal primate having language and ability to make and use complex tools; brain volume at least 1400 cc