a weapon like a spear attached to a long rope that you can throw or fire from a gun and is used for catching large fish, whales, etc. 渔猎标枪;鱼叉 They hunt whales with harpoons. 他们用鱼叉捕鲸。
Oxford Collocations DictionaryHarpoon is used before these nouns:- gun
Word Originearly 17th cent. (denoting a barbed dart or spear): from French harpon, from harpe ‘dog's claw, clamp’, via Latin from Greek harpē ‘sickle’.