whirligig

whirligig
noun

a toy that spins round, for example a top or windmill
（陀螺、风车等）旋转式玩具
■another term for roundabout (in sense 2)
同 roundabout（义项2）
■[in sing.]a thing regarded as hectic or constantly changing
狂热；变迁
the whirligig of time.
时间的变迁。
(亦作 whirligig beetle)a small black predatory beetle which swims rapidly in circles on the surface of still or slow-moving water and dives when alarmed
豉甲
Family Gyrinidae: Gyrinus and other genera
豉甲科：豉甲属和其他属

语源