pu·ta·men 
(py
-t
ām
ən)
n. pl. pu·tam·i·na (-t
ăm
ə-n
ə)
1. The hard endocarp of certain fruits; pyrene.
2. The reddish, outermost, and largest of the three portions into which the lentiform nucleus of the brain is divided.
[Latin putāmen, that which falls off in pruning, shell, husk, from putāre, to prune; see pau-2 in the Appendix of Indo-European roots.]

putamenof a peach