Lewis Short
(verb) : ē-vanno, ĕre, vannus
* To cast out the chaff of grain from the fan, to winnow. *
* Lit.: acus,Varr. R. R. 1, 52 fin.—*
* Transf., to cast out: aliquem, Pompon. ap. Non. 19, 23 (Rib. Com. Fragm. p. 239).
Charlton T. Lewis, Charles Short, A Latin Dictionary