coach in WordNet English dictionary

1. a vehicle carrying many passengers; used for public transport
   "he always rode the bus to work"
   bus  autobus  coach  charabanc  double-decker  jitney  motorbus  motorcoach  omnibus  passenger vehicle 
   
2. a railcar where passengers ride
   passenger car  coach  carriage 
   
3. a carriage pulled by four horses with one driver
   coach  four-in-hand  coach-and-four 
   
4. a person who gives private instruction (as in singing, acting, etc.)
   coach  private instructor  tutor 
   
5. (sports) someone in charge of training an athlete or a team
   coach  manager  handler 
   

1. teach and supervise (someone); act as a trainer or coach (to), as in sports
   "He is training our Olympic team"; "She is coaching the crew"
   coach  train 
   
2. drive a coach
   coach