Nail down
From Fresh Dictionary
[edit]
English
[edit]
Transitive phrasal verb
to nail (something) down;
- to attach with nails
- Nail down the shelf, then paint it.
- (idiomatic{{#if:|, {{{2}}}{{#if:|, {{{3}}}{{#if:|, {{{4}}}{{#if:|, {{{5}}}{{#if:|, {{{6}}}{{#if:|, {{{7}}}{{#if:|, {{{8}}}{{#if:|, {{{9}}}}}}}}}}}}}}}}}}}) to make something (e.g. a decision or plan) firm or certain
- They haven't nailed down their vacation plans yet.
[edit]