¹ doctor noun

• a person who is skilled in the science of medicine : a person who is trained and licensed to treat sick and injured people
• the place where a doctor works
• a dentist—used chiefly as a title or as a form of address

² doctor verb

• to change (something) especially in order to trick or deceive people
• to add something (such as alcohol or drugs) to (a food or drink)
• to give medical treatment to (an injury, a person, etc.)