Source : Webster's Revised Unabridged Dictionary (1913)

Obdure \Ob*dure"\, v. t.
   To harden. [Obs.] --Milton.

Obdure \Ob*dure"\, Obdured \Ob*dured"\, a.
   Obdurate; hard. [Obs.]

         This saw his hapless foes, but stood obdured. --Milton.