Source : Webster's Revised Unabridged Dictionary (1913)

Overspread \O`ver*spread"\, v. t. [imp. & p. p. {Overspread}; p.
   pr. & vb. n. {Overspreading}.] [AS. oferspr[=ae]dan.]
   To spread over; to cover; as, the deluge overspread the
   earth. --Chaucer.

         Those nations of the North Which overspread the world.
                                                  --Drayton.

Overspread \O`ver*spread"\, v. t. [imp. & p. p. {Overspread}; p.
   pr. & vb. n. {Overspreading}.] [AS. oferspr[=ae]dan.]
   To spread over; to cover; as, the deluge overspread the
   earth. --Chaucer.

         Those nations of the North Which overspread the world.
                                                  --Drayton.

Overspread \O`ver*spread"\, v. i.
   To be spread or scattered over.

Source : WordNet®

overspread
     v : spread across or over; "A big oil spot spread across the
         water" [syn: {spread}]