n. 拉马车的马, (棒球运动中)指点跑垒及击球的球员

Coacher \Coach"er\, n.
1. A coachman. [Obs.]
[Webster 1913 Suppl.]

2. A coach horse.
[Webster 1913 Suppl.]

3. One who coaches; specif. (Baseball), one of the side at
the bat posted near first or third base to direct a base
runner; also called a {coach}; as, third base coach.
[Webster 1913 Suppl. +PJC]