Origin and Etymology of crus
Latin crur-, crus
First Known Use: circa 1751
Medical Definition of crus
1: the lower or hind limb especially between the knee and the ankle or tarsus : shank
2: any of various anatomical parts likened to a leg or to a pair of legs: asa: either of the diverging proximal ends of the corpora cavernosab: the tendinous attachments of the diaphragm to the bodies of the lumbar vertebrae forming the sides of the aortic opening—often used in pluralccrura plural : the peduncles of the cerebrum—called also crura cerebridcrura plural : the peduncles of the cerebellumecrura pl : the posterior pillars of the fornix—called also crura fornicisf (1): a long bony process of the incus that articulates with the stapes; also : a shorter one projecting from the body of the incus perpendicular to this (2): either of the two bony processes forming the sides of the arch of the stapes
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