Lewis Short
efflŭvĭum (noun N) : id.
* A flowing out, an outlet (post-Aug. and very rare): umoris e corpore,Plin. 7, 51, 52, § 171: lacus,Tac. A. 12, 57: cerebri effluvio exspirare,Vell. 2, 120 fin., v. Kritz. ad h. l.
Charlton T. Lewis, Charles Short, A Latin Dictionary