noun (n)

• someone who plays golf poorly(noun.person)

  source: wordnet30
• a programmer who breaks into computer systems in order to steal or change or destroy information as a form of cyber-terrorism(noun.person)

  Synonym:
  cyber-terrorist, cyberpunk
  

  source: wordnet30
• a programmer for whom computing is its own reward; may enjoy the challenge of breaking into other computers but does no harm(noun.person)

  Example:
  True hackers subscribe to a code of ethics and look down upon crackers.
  

  source: wordnet30
• one who works hard at boring tasks(noun.person)

  Synonym:
  drudge, hack
  

  source: wordnet30
• One who, or that which, hacks. Specifically: A cutting instrument for making notches; esp., one used for notching pine trees in collecting turpentine; a hack.(noun)

  source: webster1913