名詞 dumdum:

1. a soft-nosed small-arms bullet that expands when it hits a target and causes a gaping wound
   同義詞：dumdum bullet

dum.dum

n.（名詞）
A hollow-point small-arms bullet designed to expand upon impact, inflicting a gaping wound.
達(dá)姆彈：一種彈頭內(nèi)凹的小型武器的子彈，設(shè)計(jì)為遇沖擊時(shí)會(huì)擴(kuò)開(kāi)，增大傷口大小

來(lái)源：
After Dum Dum , a town of northeast India
After Dum Dum , a town of northeast India