adj.敲钉的；极好的；出色的
动词nail的现在分词形式.
If it's cash on the nail you can have the car for600 pounds. 要是支付现金，你可以600英镑购得此车。
He had a hard time selling his car, but he finally nailed down the sale when he got his friend John to give him$500. 他原先卖不掉他的汽车，但他的朋友约翰给了他500美元，终于把这宗买卖定了下来。
A unit of weight used for nails, equal to 100 pounds (45.5 kilograms). 桶钉钉子的重量单位，等于100镑(合45.
在轮片或夹板上铣花纹
