[ C ] a small stick or hook that sticks out from a surface and from which objects, especially clothes, can hang小钉；挂物钉；（尤指）挂衣钩

[ S ] a reason for discussing something further （进一步讨论某事物的）依据，理由

[ C ] a device used to fasten something into a particular place（起固定作用的）钉，栓，桩

[ C ] US informal a low fast throw in baseball全力投球，钉子球

[ C ] an arrangement that fixes a price, currency, etc. at a particular level（固定价格、货币等的安排）挂钩

[ T usually + adv/prep ] to fasten something in place with pegs用钉（或桩等）固定

[ T ] to make a price, currency, etc. stay at a particular level把…固定在某一水平；限定，限制

[ T ] US informal to throw a ball in baseball low and fast（棒球）投掷快速低球