Lewis Short
(adjective) : clūsāris, e, cludo = claudo
* Easily shutting or closing (post-class.): anguli, Hyg. ap. Goes. p. 181: portio quadrata,ib. p. 156.—Access. form * clūsārĭus, a, um: latus, Hyg. ap. Goes. p. 183.
Charlton T. Lewis, Charles Short, A Latin Dictionary