Doctor \Doc"tor\, v. t. [imp. & p. p. {Doctored}; p. pr. & vb. n. {Doctoring}.] 1. To treat as a physician does; to apply remedies to; to repair; as, to doctor a sick man or a broken cart. [Colloq.] 2. To confer a doctorate upon; to make a doctor. 3. To tamper with and arrange for one's own purposes; to falsify; to adulterate; as, to doctor election returns; to doctor whisky. [Slang]