Lewis Short
(adjective) : marmŏrārĭus, a, um, marmor
* Of or belonging to marble, marble. (postAug.): faber,Sen. Ep. 90, 15.—Subst.: mar-mŏrārĭus, i, m., a worker in marble, marble-mason, Vitr. 7, 6; Sen. Ep. 88, 15; 90, 13; Firm. Math. 8, 19.
Charlton T. Lewis, Charles Short, A Latin Dictionary