Lewis Short
(adjective) : arcārĭus, a, um, arca, I. B.
* Of or pertaining to a money-box or ready money: nomina,Gai. Inst. 1. 3, § 131 Goes.—Hence, arcārĭus, i, m., a treasurer (late Lat.): arcarii gazae tuae,Vulg. Esth. 3, 9: arcarius civitatis,ib. Rom. 16, 23; Dig. 40, 5, 41.— Also,a controller of public revenues,Lampr. Alex. Sev. 43.
Charlton T. Lewis, Charles Short, A Latin Dictionary