Lewis Short
(verb) : aerūgĭno, avi, atum, 1, aerugo
* To become rusty, cankered (eccl.): aurum et argentum vestrum aeruginavit,Vulg. Jac. 5, 3.
* Trop.: sicut aeramentum, aeruginat nequitia illius,Vulg. Eccli. 12, 10.
Charlton T. Lewis, Charles Short, A Latin Dictionary