noun
first-class carriage; first-class coach
Refers to a first-class passenger car on a train.
一等車の座席は広くて快適だ。
The seats in the first-class carriage are spacious and comfortable.
この列車には一等車が連結されている。
This train has a first-class coach attached.
グリーン車 is the modern term for a first-class carriage on JR trains, while 一等車 is an older term formerly used by JNR.
Compound of 一等 (first class) and 車 (car, vehicle).