The DICT Development Group

  Neural \Neu"ral\, a. [Gr. ney^ron nerve.] (Anat. & Zool.)
     relating to the nerves or nervous system; taining to,
     situated in the region of, or on the side with, the neural,
     or cerebro-spinal, axis; -- opposed to hemal. As applied to
     vertebrates, neural is the same as dorsal; as applied to
     invertebrates it is usually the same as ventral. Cf. Hemal.
     [1913 Webster]
  
     Neural arch (Anat.), the cartilaginous or bony arch on the
        dorsal side of the centrum of the vertebra in a segment of
        the spinal skeleton, usually inclosing a segment of the
        spinal cord.
        [1913 Webster]

  neural arch
      n 1: a structure arising dorsally from a vertebral centrum and
           enclosing the spinal cord [syn: neural arch, vertebral
           arch]