\Lum"bar\, Lumbal \Lum"bal\, a. [L. lumbus loin. See
{Loin}.] (Anat.)
Of, pertaining to, or near, the loins; as, the lumbar
arteries.
{Lumbar region} (Anat.), the region of the loin;
   specifically, a region between the hypochondriac and ilias
   regions, and outside of the umbilical region.