Lewis & Short

cĭsĭārĭus, ii, m. [cisium].

  1. I. The driver of a cabriolet, Dig. 19, 2, 13.
    Plur.: CISIARIEI, C. I. L. 1, 1165.
  2. II. The maker of a cabriolet, Inscr. Orell. 4109; 4163.