Source : Webster's Revised Unabridged Dictionary (1913)

Deed poll \Deed" poll`\ (Law)
   A deed of one part, or executed by only one party, and
   distinguished from an indenture by having the edge of the
   parchment or paper cut even, or polled as it was anciently
   termed, instead of being indented. --Burrill.

Source : WordNet®

deed poll
     n : a deed made and executed by only one party