from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. the lateral division of the erector spinae, consisting of the iliocostalis lumborum musculus, iliocostalis thoracis musculus, and iliocostalis cervicis musculus

from The Century Dictionary and Cyclopedia

  • n. A muscle of the back; a part of the outer mass of the erector spinæ. Also called sacrolumbalis.


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