The Collaborative International Dictionary of English v.0.48:

Demurral \De*mur"ral\, n.
   Demur; delay in acting or deciding.
   [1913 Webster]

         The same causes of demurral existed which prevented
         British troops from assisting in the expulsion of the
         French from Rome.                        --Southey.
   [1913 Webster]

WordNet (r) 3.0 (2006):

demurral
    n 1: (law) a formal objection to an opponent's pleadings [syn:
         demur, demurral, demurrer]