noun (n)

• (baseball) a hit that flies straight out from the batter(noun.act)

  Example:
  The batter hit a liner to the shortstop.
  

  Synonym:
  line drive
  

  source: wordnet30
• a protective covering that protects an inside surface(noun.artifact)

  Synonym:
  lining
  

  source: wordnet30
• a piece of cloth that is used as the inside surface of a garment(noun.artifact)

  source: wordnet30
• a large commercial ship (especially one that carries passengers on a regular schedule)(noun.artifact)

  Synonym:
  ocean liner
  

  source: wordnet30
• One who lines, as, a liner of shoes.(noun)

  source: webster1913