Source : Webster's Revised Unabridged Dictionary (1913)

Deraign \De*raign"\, Derain \De*rain"\, v. t. [See {Darraign}.]
   (Old Law)
   To prove or to refute by proof; to clear (one's self). [Obs.]

Source : WordNet®

Derain
     n : French painter and exponent of Fauvism (1880-1954) [syn: {Andre
         Derain}]