the stem of WIND v.3 in combination = winnowing-, as in wind-cloth, -screen, -sheet.
1500. Ortus Vocab. (W. de W.), PP vj. Ventilabrum,… a wynde clothe.
1565. Inv., in Trans. Cumb. & West. Arch. Soc., X. 31–2. Husbandre gere … vii steckes, one wyndcloythe.
1763. Mills, Pract. Husb., III. 125. After passing twice through the wind screen, that objection was entirely removed.
1891. Hartland Gloss., Win-shet, a winnowing-sheet.
