cowbell
/ˈkaʊbel/noun
1- a bell hung round a cow's neck in order to help locate the animal by the noise it makes（以声响帮助确定牛的位置的）牛颈铃。
1.1
- a similar bell used as a percussion instrument, typically without a clapper and struck with a stick牛铃（一种打击乐器）。