Region of the Spine Made Up of L1–l5

This page is the CodyCross answer for the clue below from Under the sea, Group 23, Puzzle 1.

Question is: Region of the Spine Made Up of L1–l5

and the answer is: LUMBAR

Word Meaning:

LUMBAR — Related to the lower back or loin, specifically the five vertebrae between the rib cage and the pelvis.

Definitions from Wiktionary.