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Verb: nail down  neyl dawn
  1. Succeed in obtaining a position
    "He nailed down a spot at Harvard";
    - nail, peg
     
  2. Define clearly
    "I cannot nail down the rules for this game";
    - pin down, peg down, narrow down, narrow, specify
     
  3. Make final; put the last touches on; put into final form
    "let's nail down the proposal";
    - finalize, finalise [Brit], settle

Derived forms: nails down, nailing down, nailed down

See also: nail

Type of: bring home the bacon, come through, deliver the goods, determine, end, succeed, terminate, win