cauda equina
Concise Oxford English Dictionary © 2008 Oxford University Press:
cauda equina /ˌkɔːdə ɪkˈwʌɪnə/
▶noun Anatomy & Zoology the bundle of nerves descending from the lower end of the spinal cord.
– origin L., lit. ‘horse's tail’.
'cauda equina' also found in these Oxford entries:

