tram (n.)

c. 1500, "beam or shaft of a barrow or sledge," also "a barrow or truck body" (1510s), Scottish, originally in reference to the iron trucks used in coal mines, probably from Middle Flemish tram "beam, handle of a barrow, bar, rung," a North Sea Germanic word of unknown origin. The sense of "track for a barrow, tramway" is first recorded 1826; that of "streetcar" is first recorded 1879, short for tram-car "car used on a tramway" (1873).

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Definitions of tram from WordNet
tram (n.)
a conveyance that transports passengers or freight in carriers suspended from cables and supported by a series of towers;
Synonyms: tramway / aerial tramway / cable tramway / ropeway
tram (n.)
a four-wheeled wagon that runs on tracks in a mine;
Synonyms: tramcar
tram (n.)
a wheeled vehicle that runs on rails and is propelled by electricity;
Synonyms: streetcar / tramcar / trolley / trolley car
tram (v.)
travel by tram;