wind-sock (also `wind-sleeve)

n canvas tube, open at both ends, that is flown at the top of a pole (eg on an airfield) to show the direction of the wind 风向袋（如机场上的）.

willow, willow-pattern, willowy, willy, willy-nilly, wilt, wily, wimp, wimpish, wimple, win, wince, winceyette, winch, wind, wind instrument, wind up, wind-break, wind-cheater (US `wind-breaker), wind-gauge, wind-swept, wind-up, windbag, winder, windfall, windily, windiness, winding, winding-sheet, windlass, windless, windmill, window, window shade, window-box, window-dressing, window-pane, window-shopping, window-sill (also `window-ledge), windowsill,