noun (n)

• the act of digging(noun.act)

  Example:
  There's an interesting excavation going on near Princeton.
  

  Synonym:
  dig, digging
  

  source: wordnet30
• the site of an archeological exploration(noun.location)

  Synonym:
  archeological site, dig
  

  source: wordnet30
• a hole in the ground made by excavating(noun.artifact)

  source: wordnet30
• the act of extracting ores or coal etc from the earth(noun.act)

  Synonym:
  mining
  

  source: wordnet30
• The act of excavating, or of making hollow, by cutting, scooping, or digging out a part of a solid mass.(noun)

  source: webster1913