How to Memorize

to nail down a time/date

Analysis

To 'nail something down' means to establish something specifically. Similar in meaning to 'pin something down', when you 'nail something down' you establish it for certain or agree on something in precise terms. You can 'nail down' the details of something for example or 'nail down a date' for a meeting or event.  

Social Examples (Advance)

1. The couple nailed down a date for their wedding.
2. I'd like to nail down the dates of the holiday before I book time off work.
3. I can't nail down where the sound in the attic is coming from. I can't see anything that might cause it.

Professional Examples (Basic)

1. Caroline rang the recruiter to nail down a time for the interview.
2. I'd like to nail down the agreement from our end before presenting it to procurement.
3. the accounts are all over the place, I can't nail down where any of this spending is attributed to.

Further Suggestions