a small thin piece of metal with one pointed end and one flat end which you hit into something with a hammer , especially in order to fasten or join it to something else
发音
例句
1. He drove a nail into the wall. 他把钉子钉在墙上。 2. In order to hang the picture, he had to hammer a nail. 为了挂那幅画,他必须钉枚钉子。