The Collaborative International Dictionary
Postcornu
Postcornu \Post*cor"nu\, n.; pl. Postcornua. [NL. See Post-,
and Cornu.] (Anat.)
The posterior horn of each lateral ventricle of the brain.
--B. G. Wilder.
Wiktionary
postcornu
n. (context anatomy English) The posterior horn of each lateral ventricle of the brain.