verb (v)

• recover through digging(verb.perception)

  Example:
  Schliemann excavated Troy.
  Excavate gold.
  

  Synonym:
  unearth
  

  source: wordnet30
• find by digging in the ground(verb.contact)

  Synonym:
  dig up, turn up
  

  source: wordnet30
• form by hollowing(verb.contact)

  Example:
  Carnegie had a lake excavated for Princeton University's rowing team.
  Excavate a cavity.
  

  source: wordnet30
• remove the inner part or the core of(verb.contact)

  Example:
  The mining company wants to excavate the hillside.
  

  Synonym:
  dig, hollow
  

  source: wordnet30
• To hollow out; to form cavity or hole in; to make hollow by cutting, scooping, or digging; as, to excavate a ball; to excavate the earth.(verb)

  source: webster1913