choo choo

40 Moby Thesaurus words for "choo choo":
      Amtrak, baggage train, cable railroad, cog railroad, cog railway,
      el, electric, electric train, elevated, express, express train,
      flier, freight, freight train, freighter, funicular, goods train,
      interurban, lightning express, limited, local, metro, milk train,
      monorail, parliamentary, parliamentary train, passenger train,
      rack-and-pinion railroad, railroad train, rattler, rolling stock,
      shuttle, shuttle train, special, streamliner, subway, train, tube,
      underground, way train