winnow

v. 把（谷物）的杂质吹掉，扬去

wineglass, winepress, winery, wing, wing commander, wing-chair, wing-nut, wing-span, wingding, winger, wingless, wink, winker, winkle, winkle-picker, winner, winner, winning, winning, winning-post, winnings, wino, winsome, winsomely, winsomeness, winter, winter sports, winter-time, winterize, winterise, wintriness, wintry, wipe, wipe out, wiper, wire, wire netting, wire wool, wire-cutter, wire-haired, wire-tapping, wire-worm,