The Collaborative International Dictionary of English v.0.48:

Jural \Ju"ral\, a. [L. jus, juris, right.]
   [1913 Webster]
   1. Pertaining to natural or positive right. [R.]
      [1913 Webster]

            By the adjective jural we shall denote that which
            has reference to the doctrine of rights and
            obligations; as by the adjective "moral" we denote
            that which has reference to the doctrine of duties.
                                                  --Whewell.
      [1913 Webster]

   2. (Law) Of or pertaining to jurisprudence.
      [1913 Webster]

WordNet (r) 3.0 (2006):

jural
    adj 1: of or relating to law or to legal rights and obligations
           [syn: jural, juristic]