coachcoachcoaches1noun (pluralcoaches)1a person who trains a person or team in a sport: a baseball coach2 (British) a comfortable bus for taking people on long journeys: It's cheaper to travel by coach than by train.3(British) one of the parts of a train where people sitsame meaningcarriage4a vehicle with four wheels that is pulled by horsessame meaningcarriage: The Queen travelled to the wedding in the royal coach.coachcoachcoachescoachedcoaching2verb (coaches, coaching, coached)to teach somebody to play a sport or do something better: She is coaching the team for the Olympics.