cauda equina

cauda equi·na

noun \-ek-ˈwē-nə, -ē-ˈkwī-nə\

plural caudae equi·nae \-ek-ˈwē-ˌnī, -ē-ˈkwī-ˌnē\

Definition of CAUDA EQUINA

: the roots of the upper sacral nerves that extend beyond the termination of the spinal cord at the first lumbar vertebra in the form of a bundle of filaments within the vertebral canal resembling a horse's tail