claustrum ī, n
claudo, rare collat. form of claustra, a barrier, hindrance : obicitur, i. e. a chain , Cu.— A frontier fortress, key, point of control : iam perdomitorum, Cu.
claustrum, i, v. claustra init. ...
A New Latin Dictionary by Charlton T. Lewis Ph.D. and Charles Short, LL. D.
·noun A thin lamina of gray matter in each cerebral hemisphere of the brain of man. ...
Webster's Dictionary of the English Language