tram

tram
(亦作 tramcar)
noun

(Brit.)a passenger vehicle powered by electricity conveyed by overhead cables, and running on rails laid in a public road
(英)有轨电车
(historical)a low four-wheeled cart or barrow used in coal mines
(史)（煤矿用的）煤车，矿车

语源

early 16th cent. (denoting a shaft of a barrow; also in sense 2): from Middle Low German and Middle Dutch trame 'beam, barrow shaft'. In the early 19th cent. the word denoted the parallel wheel tracks used in a mine, on which the public tramway was modelled; hence sense 1 (late 19th cent.)