Source : Webster's Revised Unabridged Dictionary (1913)

Unroll \Un*roll"\, v. t. [1st pref. un- + roll.] [Written also
   {unrol}.]
   1. To open, as what is rolled or convolved; as, to unroll
      cloth; to unroll a banner.

   2. To display; to reveal. --Dryden.

   3. To remove from a roll or register, as a name.

            If I make not this cheat bring out another . . . let
            me be unrolled and my name put in the book of
            virtue!                               --Shak.