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English definition of “nail sth down”

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nail sth down

phrasal verb with nail
 
 
/neɪl/ verb [T] informal
to agree the details of a decision, an agreement, etc. so that something can happen: The decision of who would be appointed Chief Executive was made months before the other terms of the merger were nailed down. The government hopes to nail down a deal with China by year's end.
(Definition of nail sth down from the Cambridge Business English Dictionary © Cambridge University Press)
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