Lewis Short
circumspector (noun M) : circumspicio
* A watcher, watchman, spy (late Lat.): septem circumspectores sedentes in excelso ad speculandum,Vulg. Ecclus. 37, 18: Deus,i. e. all-seeing,id. ib. 7, 12.
Charlton T. Lewis, Charles Short, A Latin Dictionary