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.

Tram \Tram\, v. i.
   To operate, or conduct the business of, a tramway; to travel
   by tramway.

Tram \Tram\, n. (Mech.)
   Same as {Trammel}, n., 6.

Tram \Tram\, n. [Prov. E. tram a coal wagon, the shaft of a cart
   or carriage, a beam or bar; probably of Scand, origin; cf.
   OSw. tr[*a]m, trum, a beam, OD. drom, Prov. & OHG. tram.]
   1. A four-wheeled truck running on rails, and used in a mine,
      as for carrying coal or ore.

   2. The shaft of a cart. [Prov. Eng.] --De Quincey.

   3. One of the rails of a tramway.

   4. A car on a horse railroad. [Eng.]

   {Tram car}, a car made to run on a tramway, especially a
      street railway car.

   {Tram plate}, a flat piece of iron laid down as a rail.

   {Tram pot} (Milling), the step and support for the lower end
      of the spindle of a millstone.

Tram \Tram\, n. [Sp. trama weft, or F. trame.]
   A silk thread formed of two or more threads twisted together,
   used especially for the weft, or cross threads, of the best
   quality of velvets and silk goods.

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}]