Definition of "nail"
- verb
- To drive a nail. 
- To fix (an object) to another object using a nail. 
- noun
- A spike-shaped metal fastener used for joining wood or similar materials. The nail is generally driven through two or more layers of material by means of impacts from a hammer or other device. It is then held in place by friction. 
- The thin, horny plate at the ends of fingers and toes on humans and some other animals. 
- Sources