cestros, i, f., = κέστρος,
the plant betony : Betonica officinalis, Linn.; Plin. 25, 8, 46, § 84.
Cestrŏs, i, m., a river of Pamphylia , now Ak-su , Mel. 1, 14, 2. ...
A New Latin Dictionary by Charlton T. Lewis Ph.D. and Charles Short, LL. D.