gyron.
英 'dʒaɪrəʊ | 美 'dʒaɪroʊ
中文n. 陀螺仪；[航] 回转仪（等于gyroscope）；回转式罗盘（等于gyrocompass）；自动旋翼飞机（等于autogyro）
词根词源
gyro (n.)sandwich made from roasted lamb, 1971, originally the meat itself, as roasted on a rotating spit, from Modern Greek gyros "a circle" (see gyre (n.)). Mistaken in English for a plural and shorn of its -s.
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