Noun trailer has 4 senses
  1. dawdler, drone, laggard, lagger, trailer - someone who takes more time than necessary; someone who lags behind
    --1 is a kind of idler, loafer, do-nothing, layabout, bum
    --1 has particulars:
     loiterer, lingerer; plodder, slowpoke, stick-in-the-mud, slowcoach; putterer, potterer; straggler, strayer
    Derived forms: verb trail3, verb trail1
  2. preview, prevue, trailer - an advertisement consisting of short scenes from a motion picture that will appear in the near future
    --2 is a kind of ad, advertisement, advertizement, advertising, advertizing, advert
  3. trailer - a large transport conveyance designed to be pulled by a truck or tractor
    --3 is a kind of
    conveyance, transport
    --3 is a part of
     trailer truck, tractor trailer, trucking rig, rig, articulated lorry, semi
    --3 has particulars: car carrier; semitrailer, semi
    Derived form: verb trail5
  4. trailer, house trailer - a wheeled vehicle that can be pulled by a car or truck and is equipped for occupancy
    --4 is a kind of wheeled vehicle
    --4 has particulars: camper trailer; mobile home, manufactured home
    Derived form: verb trail5