noun (n)

• (baseball) a ballplayer who is batting(noun.person)

  Synonym:
  batsman, batter, slugger
  

  source: wordnet30
• someone who hits(noun.person)

  Example:
  A hard hitter.
  Blacksmiths are good hitters.
  

  Synonym:
  striker
  

  source: wordnet30
• One who hits or strikes; as, a hard hitter.(noun)

  source: webster1913