Wordnet 3.0
ADJECTIVE (1)
1.
of or relating to or near the part of the back between the ribs and the hipbones;
- Example: "lumbar vertebrae"
The Collaborative International Dictionary of English v.0.48:
Lumbar \Lum"bar\, Lumbal \Lum"bal\, a. [L. lumbus loin. See
Loin.] (Anat.)
Of, pertaining to, or near, the loins; as, the lumbar
arteries.
[1913 Webster]
Lumbar region (Anat.), the region of the loin;
specifically, a region between the hypochondriac and iliac
regions, and outside of the umbilical region.
[1913 Webster]
WordNet (r) 3.0 (2006):
lumbar
adj 1: of or relating to or near the part of the back between
the ribs and the hipbones; "lumbar vertebrae"