nail down

phrasal verb·1 sense·particle down

Meanings

1

Specify or fix precisely

Exact Pointuncommon

Why “down”? Attention moves down to one exact point. A target is found, fixed, or specified.

We need to nail down the date.
We need to fix the date with precision.
They nailed down the final price.
They fixed the final price clearly.

Test yourself

We need to nail down the date. What does it mean?

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