Source : Webster's Revised Unabridged Dictionary (1913)

Dor \Dor\, v. t.
   To make a fool of; to deceive. [Obs.] [Written also {dorr}.]
   --B. Jonson.

Dor \Dor\, n. [Cf. AS. dora drone, locust, D. tor beetle, L.
   taurus a kind of beetle. Cf. {Dormouse}.] (Zo["o]l.)
   A large European scaraboid beetle ({Geotrupes stercorarius}),
   which makes a droning noise while flying. The name is also
   applied to allied American species, as the {June bug}. Called
   also {dorr}, {dorbeetle}, or {dorrbeetle}, {dorbug},
   {dorrfly}, and {buzzard clock}.

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.