Lewis Short
(adjective) : mīlĭārensis (millĭārensis), e, mille
* That contains a thousand (post-class.): porticus, either containing a thousand columns, or containing a thousand paces, Vop. Aur. 49: COHORS, Inscr. Marin. Frat. Arv. p. 630.
Charlton T. Lewis, Charles Short, A Latin Dictionary