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English definition of “nail”

nail

noun [C]  /neɪl/ us  

nail noun [C] (METAL)

a thin piece of metal having a pointed end that is forced into wood or another substance by hitting the other end with a hammer, and is used esp. to join two pieces or to hold something in place

nail noun [C] (BODY PART)

the hard, smooth part at the upper end of each finger and toe

nail

verb [T]  /neɪl/ us  

nail verb [T] (FASTEN)

to attach or fasten with a nail or nails: [M] Workmen were nailing down the carpet. If you nail something shut, you put nails in it to fasten it so that it cannot easily be opened: He nailed the box shut. infml To nail someone is to catch someone in a dishonest or illegal act: We finally nailed the guys dumping garbage in the park.
Phrasal verbs
(Definition of nail from the Cambridge Academic Content Dictionary © Cambridge University Press)
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