1. vannus — de Vaan
vannus 'winnowing-basket' [f. o] (CoL+) Derivatives: vannare 'to winnow' (LuciL), vallus, -i/-us (f.) 'implement for winnowing corn', var. vallum (Varro*); vatillum 'small shovel or pan' (Varro+)? Connected with ventus by WH, who also derive vatillum from *watnelo- (thus Leumann 1977: 200). The connection with vatillum is rejected by EM on account of the different meaning. Schrijver agrees on formal grounds: it is … — [de Vaan, s.v. vannus, p. 667]
2. vannus — Lewis & Short
vannus, i (
I abl. heterocl. vannu, Non. 19, 21), f., a fan, van for winnowing grain, Col. 2, 20, 4; App. M. 11, p. 260, 9; 11, p. 269, 2: mystica Iacchi,
borne about in the Bacchic festival, Verg. G. 1, 166.
3. vannus — Walde–Hofmann
vannus, -: f. (Abl. -# Non.) ,Getreide- oder Futterschwiuge* (seit Verg., rom.; vannö, -ere Lucil. [ranniö Gl] ,worfle*, erannó, -ere [Varro] und -äre [Pompon., vgl. Non. p. 102] „worfle aus, werfe hinaus“ (s. auch o. I 422], vannulus : Aıcvdpiov GL, rom. [neugebildet aus vonnus, als dessen Beziehung zu vellus — s.u. — nicht mehr gefühlt wurde]; vgl. noch rom. *vannitäre), Deminutiv valtus, -i f. (und -um, -i n.) … — [Walde–Hofmann, s.v. vannus, p. 1639]