to teach a person or team the skills they need for a sport [= train; ↪ coaching]:
Nigel coaches a cricket team in his spare time.
2 especially British English
to give someone private lessons in a particular subject, especially so that they can pass an important test [↪ coaching]
coach somebody in/for something
The child was coached for stardom by her mother.
to help someone prepare what they should say or do in a particular situation - used to show disapproval [↪ coaching]
coach somebody in/on something
The girl must have been carefully coached in what to say in court.