'coach house' definitions:

Definition of 'coach house'

noun

A small building for housing coaches and carriages and other vehicles [syn: coach house, carriage house, remise]

From: GCIDE

carriage house \carriage house\ n. a small building usually near a large residence or part of an estate, used for keeping coaches, carriages, or other vehicles; -- also called coach house. It is now (1998) obsolescent and its function has been taken over by the garage, which is usually attached to a residence or main building. Carriage houses are still found on older estates, though not usually used for their original purpose. [PJC]