Source : Webster's Revised Unabridged Dictionary (1913)

Dor \Dor\, n. [Cf. {Dor} a beetle, and {Hum}, {Humbug}.]
   A trick, joke, or deception. --Beau. & Fl.

   {To give one the dor}, to make a fool of him. [Archaic] --P.
      Fletcher.