The Collaborative International Dictionary of English v.0.48:

Nocent \No"cent\, n.
   A criminal. [Obs.] --Sir T. Browne.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Nocent \No"cent\ (n[=o]"sent), a. [L. nocens, p. pr. of nocere
   to hurt. See Nuisance, Noxious.]
   1. Doing hurt, or having a tendency to hurt; hurtful;
      mischievous; noxious; as, nocent qualities. --I. Watts.
      [1913 Webster]

   2. Guilty; -- the opposite of innocent. [Obs.] --Foxe.
      [1913 Webster]

WordNet (r) 3.0 (2006):

nocent
    adj 1: having a tendency to cause harm