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(Anatomy) anatomy the part of the lower back and sides between the pelvis and the ribs
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|Noun||1.||lumbus - either side of the backbone between the hipbone and the ribs in humans as well as quadrupeds|
quadruped - an animal especially a mammal having four limbs specialized for walking
human, human being, homo, man - any living or extinct member of the family Hominidae characterized by superior intelligence, articulate speech, and erect carriage
body part - any part of an organism such as an organ or extremity