Iliac crest

from The Collaborative International Dictionary of English v.0.48
Iliac \Il"i*ac\, a. [Cf. F. iliaque. See {Ileum}, and cf. {Jade}
   a stone.]
   1. (Anat.) Pertaining to, or in the region of, the ilium, or
      dorsal bone of the pelvis; as, the iliac artery. [Written
      also {ileac}.]
      [1913 Webster]

   2. See {Ileac}, 1. [R.]
      [1913 Webster]

   {Iliac crest}, the upper margin of the ilium.

   {Iliac passion}. See {Ileus}.

   {Iliac region}, a region of the abdomen, on either side of
      the hypogastric regions, and below the lumbar regions.
      [1913 Webster]
    

[email protected]