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English definition of “nail sth down”

nail sth down

(DECISION) informal phrasal verb with nail     /neɪl/ verb
If you nail down an arrangement or decision, you fix and agree to the details of it: After a five-hour meeting, we finally nailed down a deal.Decisions and deciding
(Definition of nail sth down (DECISION) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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