forbiddance

from WordNet (r) 3.0 (2006)

forbiddance
    n 1: an official prohibition or edict against something [syn:
         {ban}, {banning}, {forbiddance}, {forbidding}]
    2: the action of prohibiting or inhibiting or forbidding (or an
       instance thereof); "they were restrained by a prohibition in
       their charter"; "a medical inhibition of alcoholic
       beverages"; "he ignored his parents' forbiddance" [syn:
       {prohibition}, {inhibition}, {forbiddance}]

from The Collaborative International Dictionary of English v.0.48

Forbiddance \For*bid"dance\, n.
   The act of forbidding; prohibition; command or edict against
   a thing. [Obs.]
   [1913 Webster]

         How hast thou yield to transgress
         The strict forbiddance.                  --Milton.
   [1913 Webster]