vertebrae in the region of the lower back, below the thoracic vertebrae and above the sacral vertebrae
via Wikipedia infobox
The lumbar vertebrae are located between the thoracic vertebrae and pelvis. They form the lower part of the back in humans, and the tail end of the back in quadrupeds. In humans, there are five lumbar vertebrae. The term is used to describe the anatomy of humans and quadrupeds, such as horses, pigs, or cattle. These bones are found in particular cuts of meat, including tenderloin or sirloin steak.
Human anatomy
via PubMed
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).