also pin-wheel, 1690s, "a wheel in the striking train of a clock in which pins are fixed to lift the hammer," from pin (n.) + wheel (n.). Fireworks sense is from 1869.
双语例句
1. A rough approximation would be the dual spirals in pinwheel.
大致近似于纸风车上的双重螺旋线.
来自互联网
2. Single pale blue, may show dark pinwheel marking when grown cool ; 4 - 6 per peduncle, very floriferous.
