n. 长途客运汽车( coach的复数形式 ); （铁路）旅客车厢; 教练; 指导

v. 训练, 辅导( coach的第三人称单数 )

n. (sports) someone in charge of training an athlete or a team

n. a person who gives private instruction (as in singing, acting, etc.)

n. a railcar where passengers ride