nail down

Verb

• make final; put the last touches on; put into final form
  • let's finalize the proposal
    

• define clearly
  • I cannot narrow down the rules for this game
    

• succeed in obtaining a position
  • He nailed down a spot at Harvard
    

Related words

• Synonyms: 
  finalize , finalise , settle , pin down , peg down , narrow down , narrow , specify , nail , peg