Lewis Short
Austrō (noun M) : - , 1. auster
* The south - southwest wind, Gr. Αιβόνοτος, between Auster and Africus, Isid. Orig. 13, 11, 7 (Plin. 2, 47, 46, § 120, and Sen. Q. N. 5, 16 fin. call it Libonotos, and the latter says: Libonotos, qui apud nos sine nomine est).
Charlton T. Lewis, Charles Short, A Latin Dictionary