Source : Webster's Revised Unabridged Dictionary (1913)

Inroad \In*road"\, v. t. [imp. & p. p. {Inroaded}; p. pr. & vb.
   n. {Inroading}.]
   To make an inroad into; to invade. [Obs.]

         The Saracens . . . conquered Spain, inroaded Aquitaine.
                                                  --Fuller.