Lewis Short
indāgātrix (noun F) : indagator
* She who searches into, investigates, explores: virtutis,Cic. Tusc. 5, 2, 5: avaritia latentium indagatrix lucrorum,Val. Max. 9, 4 init.: virorum,Non. 23, 1.
Charlton T. Lewis, Charles Short, A Latin Dictionary