Lewis Short
rectrix (noun F) : rector
* She that leads or guides; a directress, governess, mistress (post-Aug.): animam velut aurigam rectricemque membrorum,Col. 3, 10, 9: sapientia domina rectrixque est,Sen. Ep. 85, 32: Italia rectrix parensque mundi altera,Plin. 37, 13, 77, ยง 201.
Charlton T. Lewis, Charles Short, A Latin Dictionary