Catherine wheel
noun
1- a firework in the form of a flat coil which spins when fixed to something solid and lit凯瑟琳车轮式焰火。
1.1
- Heraldry a wheel with curved spikes projecting around the circumference【纹章】凯瑟琳车轮式纹章。
词源
late 16th cent. (as a heraldic term)： named after St Catherine（see C ATHERINE， ST）， with reference to her martyrdom.