cauda equina
noun [ C ] anatomy specialized uk/ˌkɔː.də ekˈwaɪ.nə/ us/ˌkɑː.də ɪkˈwaɪ.nə/ caudae equinae /ˌkɔː.diː ekˈwaɪ.niː/ /ˌkɑː.diː ɪkˈwaɪ.niː/
马尾(脊椎下部下降的脊髓神经束,形似马尾)
a group of nerves shaped like a horse's tail at the end of the spinal cord
cauda equina syndrome 马尾综合症