Shinkansen
/ˈʃiːnˈkɑːnsen/noun
(复同单)
1- (in Japan) a railway system carrying high-speed passenge trains新干线（日本的一种高速火车客运系统）。
1.1
- a train operating on such a system新干线上运行的火车。
词源
Japanese, from shin 'new' + kansen 'main line'.