1.a large van or wagon drawn by an automobile, truck, or tractor, used esp. in hauling freight by road. Compare
full trailer,
semitrailer.2.Also called
travel trailer. a vehicle attached to an automobile and used as a mobile home or place of business, usually equipped with furniture, kitchen facilities, bathroom, etc. Compare
tent trailer.3.a person or thing that trails.4.a trailing plant.5.a short promotional film composed of clips showing highlights of a movie due for release in the near future.6.blank film at the end of a reel or strip of film, for winding off the film in a motion-picture camera or projector. Compare
leader (def. 6).7.
Ceramics. a can with a spout, used in slip trailing.