Source : Webster's Revised Unabridged Dictionary (1913)

Tram \Tram\, v. t. [imp. & p. p. {Trammed}; p. pr. & vb. n.
   {Tramming}.]
   To convey or transport on a tramway or on a tram car.

Tramming \Tram"ming\, n. (Silk Manuf.)
   The act or process of forming trams. See 2d {Tram}.

Source : WordNet®

tram
     n 1: a conveyance that transports passengers or freight in
          carriers suspended from cables and supported by a series
          of towers [syn: {tramway}, {aerial tramway}, {cable
          tramway}, {ropeway}]
     2: a four-wheeled wagon that runs on tracks in a mine; "a
        tramcar carries coal out of a coal mine" [syn: {tramcar}]
     3: a wheeled vehicle that runs on rails and is propelled by
        electricity; "`tram' and `tramcar' are British terms"
        [syn: {streetcar}, {tramcar}, {trolley}, {trolley car}]
     [also: {tramming}, {trammed}]

tramming
     See {tram}