noun
a device that combines an anemometer and a wind vane to measure wind speed and direction
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The aerovane on top of the building accurately measures wind direction and speed.
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I always check the aerovane on our roof before deciding to fly my kite.
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That aerovane thingamajig helps me figure out if it's a good day for sailing.
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Like an aerovane, she always knows which way the conversation is going.