nail in WordNet English dictionary

1. succeed at easily
   "She sailed through her exams"; "You will pass with flying colors"; "She nailed her astrophysics course"
   breeze through  ace  pass with flying colors  sweep through  sail through  nail 
   
2. take into custody
   "the police nabbed the suspected criminals"
   collar  nail  apprehend  arrest  pick up  nab  cop 
   
3. hit hard
   "He smashed a 3-run homer"
   smash  nail  boom  blast 
   
4. complete a pass
   complete  nail 
   
5. attach something somewhere by means of nails
   "nail the board onto the wall"
   nail 
   
6. locate exactly
   "can you pinpoint the position of the enemy?"; "The chemists could not nail the identity of the chromosome"
   pinpoint  nail 
   
7. succeed in obtaining a position
   "He nailed down a spot at Harvard"
   nail down  nail  peg 
   

1. a thin pointed piece of metal that is hammered into materials as a fastener
   nail 
   
2. horny plate covering and protecting part of the dorsal surface of the digits
   nail 
   
3. a former unit of length for cloth equal to 1/16 of a yard
   nail