Definition of doctor:
		
	
		
		
		(n) :
		
		a 
physician; a member of the 
medical profession; one who is trained and licensed to heal the sick.  The final examination and qualification may award a doctorate in which case the post-nominal letters are 
MD in the 
US; a person who has attained a 
doctorate, such as a 
Ph.D. or 
Th.D. or one of many other 
terminal degrees conferred by a 
college or 
university
		 
								
				"if you still feel unwell tomorrow, go and see your doctor."
			
			
	
		
		
		(v) :
		
		to act as a (medical) doctor to; to make (someone) into an (academic) doctor