noun (n)

• disagreeable aftereffects from the use of drugs (especially alcohol)(noun.state)

  Synonym:
  katzenjammer
  

  source: wordnet30
• an official who remains in office after his term(noun.person)

  Synonym:
  holdover
  

  source: wordnet30
• something that has survived from the past(noun.act)

  Example:
  Hangovers from the 19th century.
  

  source: wordnet30