weather-vane

n revolving pointer that can turn easily in the wind and is put in a high place, esp on top of a building, in order to show the direction of the wind 风向标.

wear, wear off, wear out, wearable, wearer, wearily, weariness, wearing, wearing-out, wearisome, weary, weasel, weasel word, weather, weather forecast, weather-beaten, weather-board, weather-boarding (US `clapboard), weather-bound, weather-chart, `weather-map, weathercock, weatherman, weatherproof, weave, weaver, weaving, web, web-footed, ,web-toed, webbed, webbing, wed, Wed (also Weds), wedded, wedding, wedding breakfast, wedding-cake, wedding-ring, wedge, wedlock, Wednesday,