The Collaborative International Dictionary of English v.0.48:

Curule \Cu"rule\ (k[=u]"r[udd]l), a. [L. curulis, fr. currus a
   chariot: cf. F. curule.]
   1. Of or pertaining to a chariot.
      [1913 Webster]

   2. (Rom. Antiq.) Of or pertaining to a kind of chair
      appropriated to Roman magistrates and dignitaries;
      pertaining to, having, or conferring, the right to sit in
      the curule chair; hence, official.
      [1913 Webster]

   Note: The curule chair was usually shaped like a camp stool,
         and provided with curved legs. It was at first
         ornamented with ivory, and later sometimes made of
         ivory and inlaid with gold.
         [1913 Webster]

   Curule dignity right of sitting in the curule chair.
      [1913 Webster]