tram
/træm/(亦作tramcar /ˈtræmkɑː(r)/)
noun
1
- 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。
2
- historical a low four-wheeled cart or barrow used in coal mines〈史〉（煤矿用的）煤车, 矿车。
词源
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.）.