Webster's Revised Unabridged Dictionary · 1913

Lumbar

Lumbar , adjective

[Latin lumbus loin. See Loin.]

(Anatomy) Of, pertaining to, or near, the loins; as, the lumbar arteries.
Collocations (1)
Lumbar region (Anatomy) , the region of the loin; specifically, a region between the hypochondriac and iliac regions, and outside of the umbilical region.

Also: Lumbal