trailer Meaning, Definition & Usage

  1. noun someone who takes more time than necessary; someone who lags behind
    poke; dawdler; laggard; drone; lagger.
  2. noun an advertisement consisting of short scenes from a motion picture that will appear in the near future
    preview; prevue.
  3. noun a large transport conveyance designed to be pulled by a truck or tractor
  4. noun a wheeled vehicle that can be pulled by a car or truck and is equipped for occupancy
    house trailer.

WordNet

Trail"er noun
Definitions
  1. One who, or that which, trails.
  2. a wheeled vehicle without a motor, designed to be drawn by a powered vehicle; esp. such a vehicle equipped as a mobile dwelling unit, used as such when parked, also called mobile home.
  3. A trailer (2) designed to carry a heavy object, as a boat trailer.
  4. (Movies) A short blank segment of movie film attached to the end; -- used for convenient insertion of the film in a projector.
  5. A part of an object which extends some distance beyond the main body of the object; as, the trailer of a plant.

Webster 1913