noun (n)

• an athlete noted for accurate aim(noun.person)

  source: wordnet30
• someone skilled in shooting(noun.person)

  Synonym:
  crack shot, marksman
  

  source: wordnet30
• a fast schooner once used by New England fisherman for illegal fishing in Canadian waters(noun.artifact)

  source: wordnet30
• One skilled in shooting at an object with exactness; a good marksman.(noun)

  source: webster1913