Merriam-Webster's Collegiate® Dictionary, 11th Edition
TRAM
I. noun
Etymology: English dialect, shaft of a wheelbarrow, probably from Low German traam, literally, beam
Date: circa 1517
any of various vehicles: as, a boxlike wagon running on rails (as in a mine), streetcar , a carrier that travels on an overhead cable or rails, a streetcar line,
II. transitive verb (trammed; tramming)
Date: 1874
to haul in a tram or over a tramway