Definition of "deraign"

deraign

verb
third-person singular simple present deraigns, present participle deraigning, simple past and past participle deraigned
1. (law, obsolete, transitive) To prove or to refute by proof, especially on threat of combat.
2. (obsolete) To engage in (battle, combat etc.).
  Quotations
  Therewith they gan to hurtlen greedily, / Redoubted battaile ready to darrayne, / And clash their shields, and shake their swords on hy [...].
  1590, Edmund Spenser, “Book I, Canto IV”, in The Faerie Queene. […], London: […] [John Wolfe] for William Ponsonbie