abāctus
P. of abigo, driven away, driven off : nox abacta, driven back (from the pole), i. e. already turned towards dawn , V.: abacta nullā conscientiā, restrained by , H.
ăbactus, a, um, Part. of abigo, q. v. ...
A New Latin Dictionary by Charlton T. Lewis Ph.D. and Charles Short, LL. D.