Lum"bar (?), 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.
© Webster 1913.