noun (n)

• someone who takes more time than necessary; someone who lags behind(noun.person)

  Synonym:
  dawdler, drone, laggard, lagger, poke
  

  source: wordnet30
• an advertisement consisting of short scenes from a motion picture that will appear in the near future(noun.communication)

  Synonym:
  preview, prevue
  

  source: wordnet30
• a large transport conveyance designed to be pulled by a truck or tractor(noun.artifact)

  source: wordnet30
• a wheeled vehicle that can be pulled by a car or truck and is equipped for occupancy(noun.artifact)

  Synonym:
  house trailer
  

  source: wordnet30
• One who, or that which, trails.(noun)

  source: webster1913
• A car coupled to, and drawn by, a motor car in front of it; -- used esp. of such cars on street railroads. Called also trail car.(noun)

  source: webster1913