The Collaborative International Dictionary of English v.0.48:

Ban \Ban\, v. t. [imp. & p. p. Banned (b[a^]nd); p. pr. & vb.
   n. Banning.] [OE. bannen, bannien, to summon, curse, AS.
   bannan to summon; akin to Dan. bande, forbande, to curse, Sw.
   banna to revile, bannas to curse. See Ban an edict, and cf.
   Banish.]
   1. To curse; to invoke evil upon. --Sir W. Scott.
      [1913 Webster]

   2. To forbid; to interdict. --Byron.
      [1913 Webster]

WordNet (r) 3.0 (2006):

banned
    adj 1: forbidden by law [syn: banned, prohibited]