medicornu

from The Collaborative International Dictionary of English v.0.48

Medicornu \Med`i*cor"nu\, n.; pl. {Medicornua}. [NL., fr. L.
   medius middle + cornu horn.] (Anat.)
   The middle or inferior horn of each lateral ventricle of the
   brain. --B. G. Wilder.
   [1913 Webster]