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English definition of “nail sb down”

nail sb down

informal phrasal verb with nail     /neɪl/ verb
to make someone give you exact details or a firm decision about something: They nailed him down to a specific time and place.Questioning people and asking questions in generalCuriositySuspecting and questioning
(Definition of nail sb down from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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