yawing
['jɔ:ɪŋ]
n.
偏航，盘旋;
v.
（船）偏航，偏离航线( yaw的现在分词 );
（飞机）偏航;
例句:
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As the plane climbed to 370 feet, it started yawing.
飞机攀升到370英尺时，开始偏航。
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They were subject to violent yawing at low wind speeds.
它们在低风速下会发生强烈的偏离.
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For two hours, Morehouse surveyed the Mary Celeste sailing west, all apparently fine except for its strange yawing to and fro.
来自BOINGBOING