coach

coach is a Noun

Definition:

[1] A large, closed, four-wheeled carriage, having doors in the sides, and generally a front and back seat inside, each for two persons, and an elevated outside seat in front for the driver.

[2] A special tutor who assists in preparing a student for examination; a trainer; esp. one who trains a boat`s crew for a race. [Colloq.] Wareham was studying for India with a Wancester coach. G. Eliot.

[3] A cabin on the after part of the quarterdeck, usually occupied by the captain. [Written also couch.] [Obs.] The commanders came on board and the council sat in the coach. Pepys.

[4] A first-class passenger car, as distinguished from a drawing- room car, sleeping car, etc. It is sometimes loosely applied to any passenger car.