harpoon      
 noun [ C ] uk/hɑːˈpuːn/ us/hɑːrˈpuːn/
 捕鲸叉
a long, heavy spear (= a long, sharp weapon) attached to a rope, used for killing large fish or whales
 harpoon      
verb [ T ] uk/hɑːˈpuːn/ us/hɑːrˈpuːn/
 用捕鲸叉叉
to hit or kill a fish or whale with a harpoon