A research paper that a student writes in order to complete the requirements for a doctorate; a dissertation.

A clinic where one or more doctors receives patients for their medical care.

plural of doctor blade

(medicine, crime) The illegal practice of a patient requesting treatment from multiple physicians in order to obtain prescription drugs, either to feed an addiction or resell them.

(Internet, informal) The Internet when used to seek out medical advice.

A medical certificate.

A scraper to remove lint from a printing cylinder in a calico-printing machine.

(colloquial) Indicates that the speaker defers to the addressed person's authority or expertise.

(slang) One who fixes CB radio systems.

A person who specialises in the servicing of saws and saw blades