putamen

The story

1. Latinputus
2. Latinputō
3. Latinputāmen
4. English todayputamen

Borrowed from Latin putāmen (“husk, shell”).

First known use, by meaning

• from 18th c. The shell of a nut; the stone of a drupe fruit; endocarp.
• from 19th c. A round structure located at the base of the forebrain, regulating movement and learning.